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What are some of the things that you will need to know in order to investigate whether a collision conserves momentum and energy? Select all that apply.
If there exists a perfect sphere of mass m and radius r it is accelerated on a straight line towards the speed of light. If there is instantaneous acceleration to 0.999999999c over a distance of L to a non-moving observer.
An iron meteorite melts when it enters the Earth's atmosphere. calculate the minimum velocity the meteorite must have had before it entered Earth's atmosphere
Two equally charged, 1.00 g spheres are placed with 2.00 cm between their centers. What is the magnitude of the charge on each sphere
A 0.157kg ball is thrown straight up from 1.94m above the ground. Its initial vertical speed is 9.60 m/s. A short time later, it hits the ground. What is the total work done by the force of gravity during that time.
An astronaut on a space walk discovers that his jet pack no longer works, leaving him stranded 40 meter from the spaceship. describe how the astronaut can still use it to return to the ship
Basilisk lizards can run across the top of a water surface. With each step, a lizard first slaps its foot against the water and then pushes it down into the water rapidly enough to form an air cavity around the top of the foot.
What is the energy of a single photon of red light with a wavelength of 633 nm?
A man throws a rock from the top of a cliff that is 50.0 m above ground level with an initial speed of 27.0 m/s at an angle of 28.0° above the horizontal.
A man stands on a frictionless platform that is rotating with an angular speed of 2.3 rad/s; his arms are outstretched and he holds a weight in each hand. what is the resulting angular speed of the platform
A faulty model rocket moves in the xy-plane (the positive y-direction is vertically upward). The rocket's acceleration has components and , where = 2.50 , = 9.00 , and = 1.40 . At the rocket is at the origin and has velocity with = 1.00 and = 7.00 . ..
A 21 kg suitcase is being pulled with constant speed by a handle that is an angle of 25 degrees above the horizontal. If the normal force exerted on the suitcase is 170 N, what is the force F applied to the handle?
The natural state of hydrogen at a temperature of -269 degrees Celsius is a solid. The closest distance among the protons in this state is 3.75x10^-10m. What is the magnitude of the electrostatic force on a proton due to a single nearest-neighbor pro..
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