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A person who is 1.7 m tall throws a ball with a speed of 4 m/s atan angle of 31 degrees above the horizontal. What are the x and ycomponents of the velocity (in m/s) of the ball the instant before it strikes the ground? The acceleration due to gravity is 10m/s2
A diver 22m deep in 12°C fresh water exhales a 0.8 cm diameter bubble. What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 25°C? Hint: suppose that the air bubble is always in thermal equilibriu..
A child ties a rock to a string and whirls it around in a horizontal circle. find the period of its uniform circular motion
1.two paths lead to the top of a big hill. one is steep and direct while the other is twice as long but less steep.
A canoe has a velocity of 0.40 m/s southeast relative to the earth. Find the velocity (magnitude and direction) of the canoe relative to the river
A winch cable of negligible mass has a cross-sectional area of 1.6 cm2 and a length of 2.2 m. Young's modulus for the cable is 150 GN/m2. what is the oscillation frequency of the engine block at the end of the cable
Assume the sound speed in air is 343 m/s. A parachutist leaps from a hovering helicopter and after 3.1s of free fall shouts back toward the helicopter
question a 3.0 g bullet of specific heat 128 jkg.degree c is moving at 180 ms and enters a bag of sand then stops. if
falls to the safety net while the other speeds away, to reach another swing at the same height at that of the swing they left. Illustrate what should be the distance (in m) between the two swings?
A crate is sliding down a ramp that is inclined at the angle of 33° above the horizontal. The coefficient of kinetic friction between the crate and the ramp surface is 0.479. Find the acceleration of the moving crate.
an aa battery is connected to a parallel-plate capacitor having 4.00cm diameter plates spaced 5mm apart. how much
in the drawing the head-up display is designed so that the distance between the digital readout device and virtual
In a performance test, each of two cars takes 9.40s to accelerate from rest to 25 m/s. Car A has a mass of 1288 kg, and car B has a mass of 1767 kg. Find the net average force that acts on (1) car A and (2) car B during the test.
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