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Q. A hoodlum throws a stone perpendicularly downward with an initial speed v0 from the roof of a building, the height h above the ground. (a) How long does it take the stone to reach the ground? (b) What is the speed of the stone at impact? Give the answers in terms of the given variables and g.
Q. A diver releases an air bubble of volume 2.2 cm3 from the depth of 10 m below the surface of a lake, where the temperature is 7°C. What is the volume of bubble when it reaches just below the surface of the lake, where temperature is 25°C?
find out the escape speed from Jupiter's moon Callisto
A woman is running at a constant velocity of 5 m/s in an attempt to catch a stopped bus 11m ahead of her. Though, it pulls away from her with a constant acceleration of 1 m/s2. How much time does it take her to reach the bus if she keeps running a..
How to find out potential energy
A 700 N window washer is standing on a uniform scaffold supported by a vertical rope at each end. The scaffold weighs 200 N and is 3 m long. what is the force in each rope when washer stands 1 m from one end.
what is its kinetic energy at the end of the interval. How high a tree would a 80 kg person have to climb to increase his gravitational potential energy relative to the ground by that amount.
A ball is held on an incline at the height of 72 cm. it is then released so that the ball rolls down the incline. At the bottom of the incline there is a loop where the ball rolls around in. If the loop is 62 cm high at its highest point what is the ..
What is the required average power.
Use the binomial expansion to find an approximate expression
An oscillating LC circuit has a current amplitude of 7.50 mA, a potential amplitude of 250 mV, and the capacitance of 220 nF. What are (a) the period of oscillation.
A plane is flying southwest at 155 mi/h and encounters the wind from the west at 45mi/h? what is the planes new velocity with respect to the ground in standard position.
A baseball pitcher can throw a ball with a speed of 70m/s. He is in the back of a pickup truck that is driving away from you. He throws the ball in the direction, and it floats toward you at a lazy 10 m/s.
An RL circuit consists of a switch, an emf source Eo, a 4 kΩ resistor, and a 5 H inductor. If the potential across resistor is 16 V 5 ms after switch is closed, find out the source emf, Eo.
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