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1 A man pushes a lawn mower on a level lawn with a force of 190 N. If 33% of the force is directed horizontally, how much work is done by the man in pushing the mower 5.7 m?
2 A student throws a 0.190-kg ball straight upwards to a height of 8.10 m. How much work did the student do?
3 A 76 kg student traveling in a car with a constant velocity has a kinetic energy of 1.1 multiply.gif 104 J. What is the speedometer reading of the car in km/h?
Object A is metallic and electrically neutral. It is charged by induction so that it acquires a charge of -2.86E-6 C. Calculate the difference in mass between the charged objects
Shantel was the sole owner of the residence until it was sold. Explain how much of the gain may Shantel and Daron exclude?
A 500 turn solenoid with a length of 20 cm and a radius of 3.0 cm carries a current of 3.0 A. A second coil of four turns is wrapped tightly about this solenoid so that it can be considered to have the same radius as the solenoid. Find when the curre..
A Mercedes-Benz 300SL (m = 1700 kg) is parked on a road that rises 20° above the horizontal. What is the magnitude of the normal force
A certain dog whistle operates at 22.75 kHz, while another (brand X) operates at an unknown frequency. estimate the operating frequency of brand X
To separate two pieces of paper whose area is 10 cm by 10 cm, you blow across them with an air speed of 2.40 m/s. What is the resulting force on each
The men's world record for the shot put, 23.12m, was set by Randy Barnes of the United States on May 20, 1990. If the shot was launched from 6 f above the ground at an initial angle of 42 degrees, what was its initial speed.
Consider an LR circuit like that displayed in Figure 6.6 in Activity 2-1 in your lab manual. You measure the current through the inductor as a function of time, What is the total resistance of the circuit
If 20 grams of hot water at 80°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity? How much ice should melt in order to cool the hot water down to this temerature.
A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 3.6 m/s. How much time does it take until he catches his friend
Four identical charges (+3.0µ C each) are brought from infinity and fixed to a straight line. Determine the electric potential energy of this group
A mass m1 = 3.2 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.3 kg which hangs freely from the string, How much work is done by gravity on the two block system
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