*PHYSICS HELP*

Without using your spring scale, estimate the order of magnitude of the mass of your calculator in grams from what you judge to be its size, using the fact that the density of water is 1 g/cm3. Assume that the density of water is about the same as the density of your calculator.
1 g 
102 g
104 g
106 g

Answers

Answer 1
We consider that my calculator has the following dimensions (approx) : Length = 14 cm Width = 7 cm Heigth= 2 cm Then the volum of the calculator will be V=Length x Width x Height = 196 cm3 If we assume that my calculator has the same density of water, that is 1 g/cm3 that means my calculator mass is: M = 196 cm3 * 1 g/cm3 = 196 grams

Related Questions

A ball is dropped off of a tall building and falls for 2 seconds before landing on a balcony. a rock is then dropped from the top of the building and falls for 4 seconds before landing on the ground. how does the final speed (meaning the speed it had just before landing) of the rock compare to the final speed of the ball?

Answers

Final answer:

The final speed of the rock is greater than that of the ball because the rock falls for a longer time, resulting in a final speed that is twice as much as that of the ball when comparing the times of 2 seconds and 4 seconds of free fall under gravity.

Explanation:

To compare the final speeds of the ball and the rock dropped from the same building, but at different times, we will use the equation of motion under constant acceleration due to gravity, which is v = u + at, where v is the final velocity, u is the initial velocity (zero in this case, since both objects are dropped), a is the acceleration due to gravity (9.81 m/s2), and t is the time in seconds.

For the ball that falls for 2 seconds:

v = 0 + (9.81 m/s2) * (2 s)v = 19.62 m/s

For the rock that falls for 4 seconds:

v = 0 + (9.81 m/s2) * (4 s)v = 39.24 m/s

Thus, the final speed of the rock is greater than the final speed of the ball. Specifically, the rock's final speed is twice that of the ball's final speed because the time it falls is doubled, and since the acceleration due to gravity is constant, the final speed simply scales with time.

Ou are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball. the soccer ball is kicked at 47° from the edge of the building with an initial velocity of 21 m/s and lands 57 meters away from the wall. how tall is the building that the child is standing on?

Answers

9.16 meters First, split the velocity into horizontal and vertical components. h = 21 cos(47°) = 21 * 0.744270977 = 15.62969052 m/s v = 21 sin(47°) = 21 * 0.731353702 = 15.35842773 m/s Now determine how many seconds the ball had to travel to reach 57 meters. T = 57 m / 15.62969052 m/s = 3.647 s height of the ball at time T is d = vT - 0.5AT^2 where v = initial velocity T = Time A = acceleration due to gravity (9.8m/s^2) Plug in the known values d = (15.35842773 m/s)(3.647 s) - 0.5 9.8 m/s^2 (3.647 s)^2 d = 56.01219 m - 4.9 m/s^2 (13.30061s^2) d = 56.01219 m - 65.17298 m d = -9.1608 m So the ball fell a total of 9.16 meters, which means that the building was 9.16 meters tall.

Strenuous activity releases a substance called _________________into your bloodstream. Question 4 options: Nutrients Blood Lactic Acid Oxygen

Answers

Strenuous activity releases a substance called oxygen into your bloodstream. According to Merriam Dictionary, oxygen is a chemical that is found in the air, that has no color, taste, or smell, and that is necessary for life. It is also in restoring the body to a resting state and adapt it to exercise to perform.

The color that we see when looking at a pigmented object is ______.
a. the wavelengths that are reflected or transmitted by the pigmented object
b. the wavelengths that have been raised to an excited state by the pigmented object
c. the wavelengths that are absorbed by the pigment
d. the wavelengths that the pigmented object created after interacting with sunlight

Answers

D. the wavelengths that the pigmented object after interacting with sunlight

A object is placed in front of a convex mirror. The image that forms is .

Answers

The answer is virtual.

Explanation:

The image formed by convex mirror is virtual and erect always.

Let's consider two cases :

(1) When the object is placed at infinity, the image will be formed at the focus and behind the mirror. A point sized image will form and its nature is virtual and erect.

(2) When the object is placed anywhere from infinity to pole of the mirror, then the image will form between pole and focus. Its size is diminished and nature is virtual and erect again.

Swinging a tennis racket against a ball is an example of a third class lever. true or false

Answers

the answer to this question is true.

Answer;

The above statement is true

Swinging a tennis racket against a ball is an example of a third class lever.

Explanation;Levers are examples of simple machines that makes work easier by minimizing human effort to do work.Levers are classified according to the position of the load and the effort in respect to the fulcrum. That is, first class, second class and third class. In first class type of lever the fulcrum occurs between the load and the effort, in class two the load is between the fulcrum or pivot and the effort, while in third class, the effort occurs between the load and the fulcrum or the pivot.Swinging a tennis racket is an example of third class lever since the effort is between the load and the fulcrum.

If your front lawn is 18.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates 1050 new snow flakes every minute, how much snow (in kilograms) accumulates on your lawn per hour? assume an average snow flake has a mass of 2.00 mg

Answers

First, we need to determine the entire area of your front line by multiplying its length times its width.
18.0*20.0 = 360.0 square feet
We can use the rate of accumulation of snow, combined with this figure, to determine how much snow accumulates on your lawn per minute.
360.0 sq ft * 1050 flakes/min/sq ft = 378,000 flakes/min
We can then use the mass of a snowflake to calculate total snow accumulation per minute.
378,000 flakes/min * 2.00 mg/flake = 756,000 mg/min
Finally, we can use this number to determine accumulation per hour.
756,000 mg/min * 60 min/hr =
45,360,000 mg/hr

how does scientific knowledge develop through making observations about the natural world ?

Answers

A hypothesis that can be tested through experimentation. The results of experimentation lead to changes in scientific knowledge. The goal of science is to understand the natural world. To achieve this goal, scientists make certain assumptions. They assume that Nature can be understood by systematic study., And Scientific ideas are open to review as well. Strong scientific ideas stand the test of time and that Science can not give answers to all questions. Scientists think of nature as a unique system controlled by natural laws. And by discovering natural laws, scientists strive to increase their understanding of the entire natural world and the laws of nature are expressed as scientific laws by counting themselves as a scientific law is a statement that describes as happening under certain conditions in nature.

Item 13You have four $10 bills and eighteen $5 bills in your piggy bank. How much money do you have?

Answers

130 dollars
you have to multiply 10 times 4 and 18 times 5 and add it together

A car travels 10.0 m/s. What is its velocity in km/h?
A. 0.6 km/h
B. 36,000 km/h
C. 36 km/h
D. 360 km/h

Answers

Since 1m/s=3.6 km/h, we can conclude that 10.0m/s = 36 km/h

A car travelling 95 km/h is 210 behind a truck travelling 75 km/h. how long will it take the care to reach the truck

Answers

37.8 seconds First, determine the speed difference between the car and truck. 95 km/h - 75 km/h = 20 km/h Convert that speed into m/s to make a more convenient unit of measure. 20 km/h * 1000 m/km / 3600 s/h = 5.556 m/s Now it's simply a matter of dividing the distance between the two vehicles and their relative speed. 210 m / 5.556 m/s = 37.8 s So it will take 37.8 seconds for the car to catch the truck that's 210 meters in front of the car.

True or False? The dependent variable value changes according to changes in the other variables.

Answers

True because when the independent answer changes, then the dependent variable, which relies on the independent variable, changes.
dependent variable is what is affected by the independent variable. so id say true bc constant variable stays the same.

Sally travels by car from one city to another. she drives for 30.0 min at 80 km/h, 12 min at 105 km/h, and 45 min at 40 km/h. she spends 11.0 min eating lunch and buying gas. (a) determine the average speed for the trip. km/h (b) determine the total distance traveled. km

Answers

I don't know for sure but it might be 72 miles

In an internal combustion engine, the gas vapor/air mixture enters the cylinder during the _____ stroke.

Answers

Intake

The intake stroke of an internal combustion engine may be considered as the start of the cycle. Here, the air/gas mixture enters the combustion chamber and is then compressed. After the compression, the mixture is ignited to drive the piston upwards and turn the shaft to which the piston is connected, driving the vehicle forward.

HELP QUICK!! GIVING 16 PTS!!
Taste disorders may be linked to a problem with the __________ system. A. olfactory B. tactile C. visual D. perceptual

Answers

Correct Answer is A. A:Olfactory

Taste disorders may be linked to a problem with the olfactory system.

Therefore the correct answer is option A.

What is science?

The deliberate, empirically supported pursuit and application of knowledge and understanding of the natural and social worlds are what is known as science.

The physiological system that detects smells is called the olfactory system. The system contains the nasal cavities, which, in their bottom and top halves, respectively, support the olfactory mucous membrane for the sense of smell and function as breathing tubes.

As a result, olfactory system issues may be related to taste abnormalities; consequently, option A is the appropriate response.

Learn more about the science here, refer to the link;

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An ideal gas occupies 600 cm3 at 20c. at what temperature will it occupy 1200 cm3 if the pressure remains constant? 10c 40c 100c 313c

Answers

ANS : 313℃
You need to use K in this.
To convert​ ℃ to Kelvin (K), add 273.15 to ℃.

At the constant pressure, the final temperature of the gas was equal to 313ºC at a volume of 1200cm³. Therefore, option (D) is correct.

What is Charles's law?

Charles's law can be explained as when the pressure is kept constant, the volume of gas is directly proportional to its absolute temperature.

Therefore, V∝ T

or       [tex]{\displaystyle \frac{V_1}{T_1} =\frac{V_2}{T_2}[/tex]                                                           ..................(1)

Given, the initial temperature of the gas, T₁ = 20 ºC

T₁ = 20 + 273 = 293 K

The initial volume of the gas, V₁ = 600 cm³

The final volume of the gas, V₂ = 1200 cm³

Substitute the value of V₂, T₁, and V₁ in equation (1) to find the final temperature of the gas:

[tex]{\displaystyle \frac{600}{293} =\frac{1200}{T_2}[/tex]

T₂ = 586 K

T₂= 586 - 273 = 313 ºC

Therefore, the final temperature of the gas was equal to 313 ºC at the volume of 1200cm³.

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Young people do have the ability to initiate a positive change in their community. Depending where they live they could always give back by completing some type of community service. Some examples are setting up a beach or park clean-up, volunteering at a soup kitchen or organizing a fundraiser or a food drive for the local homeless shelter.

Answers

Yes, young people have that ability. However, many of them do not use their ability wisely, and instead of contributing to their community, they only take.

hope this helps
Yes what you said is true. But many of the young people today aren't really doing that. Most of them focus on parties and social media.

An increase in which quantity will result in an increase in momentum?

Answers

.................................................................................................it is velocity

Answer: A velocity is correct

Discuss the validity of extrapolating the acceleration value to an angle of 90°.

Answers

To find the acceleration when the angle of inclination is equal to 90 degrees, extrapolate the experimental values of acceleration versus angle of the incline. The acceleration at 90 degrees will equal 9.81 m/s/s, since this is the free-fall acceleration.

Answer:

Yes, it is validated to extrapolate the acceleration value to an angle of 90 degrees.

Explanation:

Assume the friction-less inclined plane. There exists a mathematical relationship between angle of incline and the object rolling in downward direction on friction-less inclined plan.

Acceleration of object = sinθ × g  

Here, θ=90 degrees so,

Acceleration of object = g = 9.8 m/s^2

Hence, it is validated to extrapolate the acceleration value to an angle of 90 degrees .

A car slows down from 23 m/s to rest in a distance of 85 m. what was its acceleration, assmed constant

Answers

First calculate the time by using following equation:
d= (vi+vf)/2 x t 

where t = time

vi is the initial velocity = 23 m/s

vf is the final velocity  = 0 m/s

and d is the distance covered = 85m

85 = (23 + 0)/2 x t

t = 85/11.5 = 7.39s

Now use this equation to find acceleration:

a= (vf-vi)/t 

a = 0 – 23/ 7.39

a = -3.112 m/s²

so, the acceleration is 3.112 m/s²


The magnitude of the car's acceleration was 3.1 m/s²

Further explanation

Acceleration is rate of change of velocity.

[tex]\large {\boxed {a = \frac{v - u}{t} } }[/tex]

[tex]\large {\boxed {d = \frac{v + u}{2}~t } }[/tex]

a = acceleration (m / s²)v = final velocity (m / s)

u = initial velocity (m / s)

t = time taken (s)

d = distance (m)

Let us now tackle the problem!

Given:

initial velocity = u = 23 m/s

final velocity = v = 0 m/s

distance = d = 85 m

Unknown:

acceleration = a = ?

Solution:

[tex]v^2 = u^2 + 2ad[/tex]

[tex]0^2 = 23^2 + 2a(85)[/tex]

[tex]0 = 529 + 170a[/tex]

[tex]170a = -529[/tex]

[tex]a = -529 / 170[/tex]

[tex]\large {\boxed {a = -3.1 ~ m/s^2} }[/tex]

The acceleration was 3.1 m/s² in the opposite direction to its velocity.

A negative sign means the direction of acceleration is opposite to the direction of velocity.

Learn moreVelocity of Runner : https://brainly.com/question/3813437Kinetic Energy : https://brainly.com/question/692781Acceleration : https://brainly.com/question/2283922The Speed of Car : https://brainly.com/question/568302

Answer details

Grade: High School

Subject: Physics

Chapter: Kinematics

Keywords: Velocity , Driver , Car , Deceleration , Acceleration , Obstacle , Speed , Time , Rate

A stone is dropped from a tower 100 meters above the ground. The stone falls past ground level and into a well. It hits the water at the bottom of the well 5.00 seconds after being dropped from the tower. Calculate the depth of the well. Given: g = -9.81 meters/second2.

Answers

make the base of the building zero. Then the initial distance is 100m, final distance unknown x. Use gravity, time and initial velocity to solve for final distance.
x - 100 = (0)(5) +(1/2)(-9.81)(5^2)
x - 100 = 0 - 122.625
x = -122.625 + 100
x = -22.625 m below ground

What type of pipe wrenches are designed for turning and holding where marring is not objectionable?

Answers

Final answer:

Mechanics extend the handle of a wrench with a pipe to increase leverage and torque, making it easier to remove very tight bolts, based on the physics principle of the lever arm. While effective, this increases the risk of over-torquing and potentially damaging equipment or injuring oneself.

Explanation:

When mechanics need to remove a very tight bolt, they may use a tactic that involves sliding a length of pipe over the handle of a wrench. This technique provides additional leverage which increases the torque applied to the bolt, making it easier to loosen. The physics principle at play here is that of the lever arm, where a longer handle effectively increases the distance from the pivot point (the bolt in this case), requiring less force to achieve the same amount of turning force or torque.

However, this increased torque also brings with it risks; applying too much force can shear or snap a bolt, potentially leading to equipment damage or personal injury. Therefore, while extending the handle of a wrench can be helpful, it is important to use this method with caution to avoid over-torquing.

Why Pipes over Wrench Handles Work

The principle behind using a pipe over a wrench handle is simple: a longer handle means you have a larger radius to apply your force, which translates to more torque on the bolt or nut.

Which of the following describes a scientific law? A.based of scientific evidence B.explains how and why nature does what it does C.not based of scientific evidence

Answers

A Based of scientific evidence.
Most of the time in science people don't know why in science or how nature does what it does.

Answer: A: based in scientific evidence.

Explanation:

Scientific laws are made after proper research under varying conditions using scientific method to show that a particular theory is right under stated conditions

Scientific laws are carried out using methods ands not just any process with condition taken into consideration

What is the efficiency of a machine that miraculously converts all the input energy to useful output energy?

Answers

A perfectly efficient machine can only be 100% efficient. 

Answer: 100%

Explanation:

Efficiency = output/input = 100/100 x 100 = 100% efficient

Machines are not 100% efficient because some of the work done by a machine is used to overcome friction. So work output is always less than work input.

Work: Done by machines is calculates as Mechanical Efficiency which is Work Output divided by Work Input.

What is the name of the scientist who discovered that atoms have positive charges? A. John Dalton B. Robert Millikan C. Eugen Goldstein D. Ernest Rutherford

Answers

The answer is D. Ernest ruthford
D. Ernest Rutherford

After the discovery of the electron, some scientists started hypothesizing that there had to be some sort of positive charge in the atom that balances it out. When Rutherford discovered the nucleus of an atom, people realized that positive charges existed inside that nucleus. It's hard to point out just one scientist who discovered protons, because it was really a group effort of many scientists, but the most popular scientist became Rutherford, he also named the proton.

If millikan was measuring the charge on an oil droplet with 3 negatively charged electrons on it, what charge would he have measured on the droplet?

Answers

The unit of measurement for charge is Coulomb. Now, every particle of electron contains a charge equal to 1.602×10⁻¹⁹ C. So if there are 3 electrons in the oil droplet, then the total charge would be:

Total charge = 3 electrons(1.602×10⁻¹⁹ C/ electron)
Total charge = 4.806×10⁻¹⁹ C

Millikan would have measured a charge of 4.8  imes [tex]10^{-19}[/tex] C on an oil droplet carrying 3 electrons, as each electron has a charge of 1.6 imes [tex]10^{-19}[/tex] C.

If Millikan was measuring the charge on an oil droplet with 3 negatively charged electrons on it, he would have measured a charge on the droplet by multiplying the charge of a single electron by the number of electrons on the droplet. Therefore, the charge measured would be 3 times 1.6 imes [tex]10^{-19}[/tex] C, which equals 4.8 imes [tex]10^{-19}[/tex] C. Each electron has a fundamental charge of 1.6 imes [tex]10^{-19}[/tex] C, a value that Millikan determined through his experiment to be the standard charge of a single electron.

A circular flow of warmer fluid and cooler fluid is called what? PLEASE HELP I AM BEGGING YOU!!!

Answers

Convection currents.

Hope this helps!
This would be a convection current 

Which one of the following indicates a drop in temperature? A. The alcohol in a thermometer expands. B. The brass on a bent bimetallic strip is on the outside curve. C. The column of liquid in a thermometer moves up three degrees. D. A bimetallic strip bends so that the steel is on the outside curve.

Answers

D. A bimetallic strip bends so that the steel is on the outside curve.

Answer:

A bimetallic strip bends so that the steel is on the outside curve.

Explanation:

A bimetallic strip is a combination of two different metals. The linear  coefficient of expansion of various metals are different, depending on their characteristics. For example, when a bimetallic strip of brass and steel are taken, thermal expansion coefficient of brass is more than that of steel.

That implies brass expands more than steel, for a given amount of heat supplied. So brass will curve outward since it becomes longer compared to steel. Steel will curve inwards.

Similarly, for cooling process where a drop in the temperature occurs, brass contracts more compared to steel and so Steel will be on outside curve.

A 5.00-kg box slides 6.50 m across the floor before coming to rest. what is the coefficient of kinetic friction between the floor and the box if the box had an initial speed of 3.00 m/s?

Answers

Work=Fd and is equal to the change in energy, friction does work to stop the box. The box's kinetic energy is initially (K=.5m(v^2)) 22.5J and ends up at 0J. Friction does 22.5J of work over 6.5m. 22.5J=(F)(6.5m), F=3.46N. The force of friction is equal to the coefficient of friction times the normal force of an object, F=μFⁿ. We can determine the normal force by multiplying mass and gravity, Fⁿ=50N. Bringing this back to the force applied by friction, 3.46N/50N=μ=0.0692.

Neglecting air resistance, what maximum height will be reached by an arrow launched straight upward with an initial speed of 35 m/s

Answers

The velocity at the maximum height will always be 0. Therefore, you will count your final velocity as 0, and your initial velocity as 35 m/s. Next, we know that the acceleration will be 9.8 m/s^2. How? Because the ball is thrown directly upward, and the only force acting on it will be the force of gravity pushing it back down.

The formula we use is h = (Vf^2 - Vi^2) / (2*-9.8m/s^2)

Plugging everything in, we have h = (0-1225)/(19.6) = 62.5 meters is the maximum height.
Final answer:

The maximum height reached by the arrow launched straight upward with an initial speed of 35 m/s is 62.5 meters.

Explanation:

To calculate the maximum height reached by an arrow launched straight upward, we can use the equations of motion. Neglecting air resistance, the arrow will reach its maximum height when its vertical velocity becomes zero. The equation to calculate the maximum height, h, is given by:

h = (v2) / (2g)

where v is the initial speed of the arrow and g is the acceleration due to gravity.

Plugging in the values, we get:

h = (352) / (2 * 9.8) = 62.5 meters

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