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You throw a 176 g ball straight up to a height of 37.0 m.
(a) Assume that the displacement of your hand is 0.70 m as you throw the ball straight up. How long is the ball is in your hand?
s
(b) Calculate the average force exerted by your hand while you are throwing it.
N
(c) Is it OK to neglect the gravitational force on the ball while it is being thrown?
Yes/No
an induction roller coaster can accelerate a train from zero to 27m/s in 2.5 seconds. What is the average force exerted on a 68kg rider
A force of 29.73 N is applied tangentially to a wheel of radius 0.34 m. This force causes an angular acceleration of 1.20 rad/s2. What is the rotational inertia of the wheel
At a time when mining asteroids has become feasible, astronauts have connected a line between their 3310-kg space tug, How much time does it take for the ship and the asteroid to meet
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A good model for a radio antenna is a dipole. P1 is on the perpendicular bisector of the dipole, and P2 is along the axis of the dipole in the direction of dipole vector ˆp. P1 and P2 are both a distance 100m from the center of the dipole.
An optical engineer needs to ensure that the bright fringes from a double slit are 15.7 mm apart on a detector that is 1.61 m from the slits. how far apart should the slits be
An inductor is connected to a source of sinusoidally varying voltage with constant amplitude and a frequency of 50.0 Hz. what will be the new rms current
Heat is extracted from a certain quantity of steam at 100 degrees celsius. Thus the steam changes into ice at 0 degrees celsius. If this energy were used to accelerate the ice from rest, what would be the linear speed of the ice.
A train engineer blows a whistle that has a frequecy of 4.0 X 10^2 hz as the train approaches a station. if the speed of the train id 25 m/s, what frequency will be heard by a person at station.
What is the flow speed of the medicine through the needle. What is the least force the nurse needs to apply to the syringe.
Skateboard with a mass of 3kg is moving at a speed of 5 m/s on a level surface. It encounters a hill and rolls up until it stops. To what vertical height does it rise
An express subway train passes through an underground station. It enters at t = 0 with an initial velocity of 18.5 m/s and decelerates at a rate of 0.150 m/s2 as it goes through. How fast is it going when the nose leaves the station
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