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A lady pushes down on a 35.0 kg crate (constrained to move along a horizontal floor) at an angle of 47.3 degrees to the horizontal with a force of 125N along a frictionless surface.
A) what is the acceleration of the crate?
B) what is the normal force of the surface on the crate?
plane flies at 1.13 times the speed of sound. Its sonic boom reaches a man on the ground 0.99 min, What is the altitute of the plane
A Carnot engine uses a steam boiler at 100°C as the high-temperature reservoir. Determine the useful power output of the heat engine
A jogger on a circular track that has the radius of 0.150km runs a distance of 1.10km. What angular distance does the jogger covers in radians.
As you zip through space in your PPS (personal propulsion suit), your pulse rate, as you count it, is 115 bpm, How fast are you moving with respect to the Moon
A spherical source radiates sound uniformly in all directions. At a distance of 13 m, the sound intensity level is 80 dB. What power is radiated by this source
A spring of negligible mass stretches 3.00 cm from its relaxed length when a force of 7.70 N is applied. A 0.490-kg particle rests on a frictionless horizontal surface, What is the amplitude of the motion
Does current through a power supply increase when parallel bulbs are added? For example, if you have a circuit with one bulb and measure the current through the bulb to be 100 mA, what is the current through the power source when you add another b..
Suppose that a disk rotates through two revolutions in 4.2 seconds. What is its displacement in radians in this time
A "biconvex" lens is one in which both surfaces of the lens bulge outwards. What is the focal length f of this lens in air
Suppose the image of an object is upright and magnified 1.69 times when the object is placed 14cm from a lens
A thermos contains 141 cm3 of coffee at 92.9 °C. To cool the coffee, you drop two 10.4-g ice cubes into the thermos. What is the final temperature of the coffee
A diverging lens (f = â€"12.0 cm) is located 23.0 cm to the left of a converging lens (f = 35.0 cm). Determine the distance of the final image relative to the converging lens
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