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A spacecraft approaching the earth launches an exploration vehicle. After the launch, an observer on earth sees the spacecraft approaching at a speed of 0.35c and the exploration vehicle approaching at a speed of 0.90c. What is the speed of the exploration vehicle relative to the spaceship?
An ideal gas is compressed at constant pressure to one-half its initial volume. find the initial volume of the gas
q1. the active element of a certain laser is made of a glass rod 33.0 cm long and 1.60 cm in diameter. assume the
A 75.0kg skier rides a 2830m long lift to the top of a mountain.The lift makes an angle of 14.6o with the horizontal. What is the change in the skier's gravitational potential energy
A motorcycle, which has an initial linear speed of 6.4 m/s, decelerates to a speed of 1.5 m/s in 5.7 s. estimate the angular displacement (in rad) of each wheel
A 151 kg car rounds a curve of radius 163 m at 46 m/s. The acceleration of gravity is 9.8 m/s2 . What force must the road exert on its tires to hold the car on course? find out its speed when it has moved?
A car dealer claims that his product will accelerate at a constant rate from rest to a speed of 200 km/hr in 8s. What estimated distance will the car travel.
In an aortic aneurysm, a bulge forms where the walls of the aortaare weakened. If blood flowing through the aorta (radius 1.0 cm)enters an aneurysm with a radius of 3.0 cm, how much on average isthe blood pressure higher inside the aneurysm than the ..
A 3kg object moving in the positive x direction has a one-dimensional elastic collision with a 5kg object initially at rest. What was the initial speed of the 3kg object
a 10,000kg railroad car is traveling with an initial speed of 24.0 m/s when it strikes an identical railroad car that is initially at rest. how much original kinetic energy was lost in this collision
a circular wire of radius 5.19 cm has a current of 3.81 a flowing in it. the wire is placed in a uniform magnetic field
A particle of mass 7.22 x 10^-27 kg, moving at 7.06 x 10^5 m/s, strike an identical particle which is initially at rest. What are the final speeds of the particles
A truck is traveling at 11.1 m/s down a hill when the brakes on all four wheels lock. How far does the truck skid before coming to a stop
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