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A raindrop of mass 3.06*10e5 kg falls vertically at constant speed under the influence of gravity and air resistance. Model the drop as a particle.
(a) As it falls 105 m, what is the work done on the raindrop by the gravitational force?
(b) What is the work done on the raindrop by air resistance?
how does the electron travel? ive heard that it just exists at a certain point it fluctuates in and out of existence.
A cannonball is shot (from ground level) with an initial horizontal velocity of 40 m/s and an initial vertical velocity of 29 m/s, What is the initial speed of the cannonball
Assume that all surfaces in the figure are frictionless. What value should have so the masses won't accelerate? Express your answer to two significant figures and include the appropriate units.
q1. if a car travelling at 63 kmh will skid 18 m when its brakes lock how far will it skid if it is travelling at 150
A car of mass 1286.6 kg is moving at a speed of 67.6 mph when it misses a curve in the road and hits a bridge piling, how much average power (in watts) is expended in this interval
If a person were to push hardly on a solid wall will the work be done? Also, why would it be exhausting to push hardly against this solid wall?
A block is suspended from a string connected to a balance. While in air, the scale reads 350 N. What is the buoyancy force on the object when immersed in water
A travelling at a speed of 15 m/s slams on the breaks locking the wheels of his car, What is the speed of the vehicle after 2 seconds have passed
a student sitting on a frictionless rotating stool has rotational inertia 0.91kg?m2 about a vertical axis through her
Suppose an asteroid is found that appears to be heading directly toward Earth (using Earth's location at the time of discovery). It is 4.2 A.U. away (i.e., 4.2 times the Earth-Sun distance), and travelling through the Solar System with a speed of ..
The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides. What is the current coming from the wall socket
Find the final velocities of (a) the 2.70-kg ball and of (b) the 7.10-kg ball if the collision is elastic. (c) Find the magnitude and direction of the final velocity of the two balls if the collision is completely inelastic.
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