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A 2 kg mass hangs motionless from a partially stretched spring having a spring constant of 177 N/m. What is the magnitude of the force (in N) that would be required to pull the mass down by an additional 7 cm?
You're driving along a rural highway in a light rain at 62 mph (28 m/s). Just after rounding a bend, you see a 30-mph (13 m/s) speed zone ahead, with a police car parked just beyond the sign.
At high noon, the Sun delivers 1000 W to each square meter of a blacktop road. If the hot asphalt transfers energy only by radiation, what is its steady-state temperature?
The block in the figure is initially at rest on an inclined plane at the equilibrium position that it would have if there were no friction between the block and the plane
A steel wire of negligible mass is placed under tension by attaching its bottom to the tip of a solid copper cone of height H. what is the wire's new fundamental frequency
A weight lifter raises a 1021 N weight a vertical distance of 1.60 m in a time interval of 2.20 s. Compute the power provided by the weight lifter's force
Law of Gravitation- Find out an expression for the magnitude of the initial velocity that a projectile should possess in order to leave the earth when air friction is neglected. The gravitational constant for g is, G = 6.67428*10^-11 m^3 Kg^-1 s^-..
A capacitor with its plates separated by paper stores 4.8 of charge when it is connected to a particular battery. An otherwise identical capacitor, How much charge does that capacitor store
An ideal gas is compressed at constant pressure to one-half its initial volume. a)If the pressure of the gas is 150kPa , and 770J of work is done on it, find the initial volume of the gas.
Two 8.0 coulomb light bulbs are connected in a 12 V series circuit. What is the power of both glowing bulbs
For exercise, a 60 kg athlete runs up a 10-m high hill in 30 seconds. Assume the efficiency of the human body is 25%. Determine her metabolic power
1.7 kilograms of water are changed from ice at 0?C into liquid water at 0?C, determine the change in mass of the water
Neglect air resistance during the descent. She comes to rest 3.00 m under the surface of the water. Identify the average force that the water exerts on the diver. This force is nonconservative.
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