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When chasing a hare along a flat stretch of ground, a greyhound leaps into the air at a speed of 14.0 m/s, at an angle of 30.0° above the horizontal.
(a) What is the range of his leap and
(b) for how much time is he in the air?
A hunter on a frozen, essentially frictionless pond uses a rifle that shoots 4.20g bullets at 975m/s. Find the recoil speed of the hunter if he fires the rifle horizontally
The tortoise can run with a speed of 0.1 m/s and the hare can run with a speed of 2 m/s. They start their race at the same time, but the hare, feeling confident, stops along the way for a two minute nap, and the tortoise wins by the length of his ..
What is least amount of work required by an external force
the acceleration of gravity at the surface of moon is 1.6 m/s^2. A 5.0 kg stone thrown upward on moon reaches a height of 20m, find its intial velocity
A cell membrane is composed of lipid molecules and approximately 11 nm thick, what is the approximate capacitance of a spherical cell that has a diameter of 11mu or micro m
An automobile starter motor has an equivalent resistance of 0.0660 ? and is supplied by a 12.0-V battery with a 0.0170-? internal resistance. What is the current to the motor
A floodlight with a mass of 20.0 kg is used to clarify the parking lot. The floodlight is supported at the end of a horizontal beam that is hinged to a vertical pole.
On an air track, a 402.0g glider moving to the right at 2.25m/s collides elastically with a 498.0g glider moving in the opposite direction at 2.90m/s. Find the velocity of second glider after the collision
A student could either pull or push, at an angle of 30? from the horizontal, a 55kg crate on a horizontal surface, Calculate the minimum work required for both pulling and pushing
A 5.8 m diameter merry-go-round is rotating freely with an angular velocity of 0.90 rad/s. What is the angular velocity of the merry-go-round now
Calculate the period of a satellite orbiting the Moon, 94km above the Moon's surface. Ignore effects of the Earth
A plane is flying at an altitude of 10000 metres, and the pitot tube measures a gauge pressure of 10kPa. What is the airspeed of the plane
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