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Question: The statue of Isaac Newton is crated and moved from the Oxford Museum of Natural History and Science for cleaning. The mass of the statue and the crate is150 kg. As the statue slides down a ramp inclined at 40°, the curator pushes up, parallel to the ramp's surface, so that the crate does not accelerate. If the statue slides3 m down the ramp, and the coefficient of kinetic friction between the crate and the ramp is 0.54, calculate the work done on the crate by each of the following.
Neon gas is injected into a metal cylinder sealed by a movable piston. The gas is allowed to come to an equilibrium temperature of 200C when the internal pressure is 0.3 atmospheres and the volume is 4 litres.
The magnetic field perpendicular to a circular wire loop 14.4 cm in diameter is changed from +0.35 T to -0.64 Tin 300 ins , where + means the field points away from an observer and - toward the observer. Calculate the induced emf. Express your answ..
as you get closer, you notice that it is GODZILLA!! and he sees you! and begins to come after you!! if you are now moving away at 15 m/s, what is the new frequency you detect from GODZILLA
A 130- baseball, moving along the axis with speed 35 , strikes a fence at a 45 angle and rebounds along axis with unchanged speed Give the - and - components of its change in momentum.
This instrument was used to measure the vibration of a machine with a known frequency of 30 cps.If a reading of 0.024 V is indicated.
You are driving a car which is heading 20 m/s towards a brick wall. You sound a horn which emits at a frequency of 400 Hz when at rest. What is the beat frequency that you hear
A 14.1-g bullet is accelerated from rest to a speed of 793 m/s in a rifle barrel of length 66.9 cm. (a) Find the kinetic energy of the bullet as it bullet as it leaves the barrel.
When the spring is released, an explosive separation occurs at the expense of the internal energy of the compressed spring.
A fuse in an electric circuit is a wire that is designed to melt, and thereby open the circuit, if the current exceeds a predetermined value. Assume that the material to be utilized in a fuse melts when the current density rises to 430 A/cm2. What di..
A 65-kg woman cheats on her diet and eats a 612-Calorie (612 kcal) jelly doughnut for breakfast. If the human body is only 21% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work off her breakf..
Objects A and B are both positively charged. Both have a mass of 400g , but A has twice the charge of B. When A and B are placed 25cm apart, B experiences an electric force of 0.54N . What is the charge on A? If the objects are released, what is t..
A cube of ice is taken from the freezer at -9.5°C and placed in a 105 g aluminum calorimeter filled with 323 g of water at room temperature of 20°C. What was the mass of the ice cube
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