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1. Answer the following:
What are the units of mass and the units of weight for the metric system?What are the units of mass and the units of weight for the English system? 2. Explain the relationship between the mass and the weight of an object. Is the mass of an object the same on earth and the moon? Are the weights the same on earth and the moon? 3. In your own words, explain Newton's second law of motion and give two examples. 4. How does mass affect the rate of acceleration in free fall:
In air?In a vacuum? 5. If the mass of a sliding block is tripled while a constant net force is applied, by how much does the acceleration decrease? 6. Explain the difference between a vector and a scalar quantity. Give at least two examples of different variables that are vector and scalar quantities. 7. Give an example of Newton's third law of motion and explain why it is an example. 8. For each of the following interactions, identify the action and reaction forces:
A hammer hits a nail.Earth's gravity pulls down on a book.A helicopter blade pushes air downward. 9. Answer the following questions:
If you stand next to a wall on a frictionless skateboard and push the wall with a force of 30 Newtons, how hard does the wall push on you?If your mass is 60 kilograms, what is your acceleration?
A box has a partition with 10% of its volume one side. The larger section of the box contains 500 Ar atoms and the smaller 100He atoms. A small hole is put into the partition. At equilibrium, what is the mean number of atoms of each type?
erson decides to use an old pair of eyeglasses to make someoptical instruments. What is the maximum angular magnification he can produce in a telescope
A stone with a mass of 0.900 kilogram is attached to one end of a string 0.600 meter long. The string will break if its tension exceeds 65.0 Newton. Determine the maximum speed the stone can attain
For a movie scene, a 75kg stuntman drops from a tree onto a 55kg sled that is moving on a frozen lake with a velocity of 15m/s toward the shore. What is the speed of the sled after the stuntman is on board
A man runs with a speed of 6 m/s off a platform that is 10 mabove the water. How fast is he moving when he hits the water
A capacitor has a potential difference of 2230V between its plates. A short aluminum wire with initial temperature 23.0 degrees C is connected between the plates of the capacitor, What is the capacitance of the capacitor
A race car can be slowed with a steady acceleration of -11 m/s2 if the car is going 55m/s how many meters would it travel before it stops.
An object with mass 3.9kg is attached to a spring with spring stiffness constant 230N/m and is executing simple harmonic motion. When the object is 1.7×10^?2m from its equilibrium position, it is moving with a speed of 0.65m/s Calculate the amplitude..
you were directed to measure the angle of reflection when the ray was incident on either side of the normal to the
A 255 g oscillator has a speed of 93.0 cm/s when its displacement is 3.90 cm and 74.5 cm/s when its displacement is 6.00 cm
An ordinary glass is filled to the brim with 350 mL of water at 100 degrees celsius. If the temperature decreased to 20 degrees celsius, how much water could be added to the glass
A .430 kg block of wood hangs from the ceiling by a string, and a 7.10 x 10^-2 kg wad of putty is thrown straight upward, How high does the putty-block system rise above the original position of the block
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