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After catching the ball, Sarah throws it back to Julie. The ball leaves Sarah's hand a distance 1.5 meters above the ground, and is moving with a speed of 8 m/s when it reaches a maximum height of 11 m above the ground.
What is the speed of the ball when it leaves Sarah's hand?
A cylindrical container 1.3 tall contains mercury to a certain depth, d. The rest of the cylinder is filled with water. what is the depth d
what are the magnitude and direction of its acceleration. A potential difference of 80 mV exists between the inner and outer surfaces of the cell membrane. The inner surface is negative relative to the outer surface. How much work is required to ej..
A window air-conditioner unit absorbs 9.70×104J of heat per minute from the room being cooled, What is the energy efficiency rating of the unit
A charge of +45.9 C is at the origin. When charge Q is placed at 2 m along the positive x axis, What is the value of Q
A particle of rest mass 1.10 MeV/c2 and kinetic energy 2.10 MeV collides with a stationary particle of rest mass 2.80 MeV/c2. Find the speed of the first particle before the collision
Gillian buys a pendulum clock at a discount store and discovers when she gets it home that it loses minutes each day.
What is the amplitude of the oscillations . Could you think of a simple method for determining the focal length of a converging lens.
A boy flies a kite with the string at a 30 degree angle to the horizontal. The tension in the string is 4.5N. How much work does the string do on the boy
Find the time it takes for a telephone call to go by way of satellite between these cities. Ignore the curvature of the earth.
Calculating magnetic flux, induced current & magnetic field.
A bird sits on a high-voltage power line with its feet 5.2 cm apart. What is the potential difference between the bird's feet
A length of aluminium wire is connected to a precision 10.00 V power supply, and at 20.0C the current through it is measured precisely to be 0.4212 A. determine the unknown temperature
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