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A 0.2 kilogram plastic cart and a 20 kilogram lead cart can both roll without friction on a horizontal surface. Same forces are used to push both carts forward for a time of 1 sec, starting from rest. Find which cart has the greater momentum.
When monochromatic light shines perpendicularly on a soap film (n=1.33) with air on each side, What is the vacuum wavelength of the light
A 2.10kg snowball is fired from a cliff 8.55 m high with an initial velocity of 11.90 m/s, directed 47.0° above the horizontal. (a) Using energy techniques, find speed of the snowball as it reaches the ground below the cliff. What is that speed (b) i..
A 913-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it reaches a speed of 30.0 m/s. What is the average force exerted on the car during this time
To get back to the shuttle, the astronaut unstraps a 10-kg tool kit and throws it away with a speed of 8 m/s. In the script, the astronaut, who has a mass of 80 kg without the toolkit, survives, but is this accurate.
A 4 kg wooden block is at rest on a tabletop. A 0.03 kg bullet enters the block going at 800 m/s. How much time was the bullet in the block
A woman finds the front windshield of her car covered with ice at -12.0 °C. How much heat is required to melt the ice
A hot-air balloon is ascending at the rate of 13 m/s and is 93 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? ? s (b) With what speed does it hit the ground? ? m/s
an other frame moves with a speed of 0.85 relative to the home frame. an object at rest in the home frame has a length
Two point charges q1 = 4.0 ?C and q2 = -8.0 ?C are placed along the x-axis at x1 = 0 m and x2 = 0.20 m, find the electric potential energy of this system of charges
An object is placed to the left of a convex lens and on the optical axis. calculate the magnification of the image formed by the lens
The speed of an ion in a particle accelerator is doubled from 0.430c to 0.860c. determine the final relativistic momentum of the ion
A proton moves at 1.0x10^7 m/s perpendicularly to a uniform magnetic field. It experiences an acceleration of 2.0x 10^13 m/s^2 in the +x direction when its velocity is in the +z direction. Determine the magnitude and direction of the field.
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