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A stone is dropped from the roof of a building; 1.20 s after that, a second stone is thrown straight down with an initial speed of 22.0 m/s , and the two stones land at the same time.
How long did it take the first stone to reach the ground?
How high is the building?
What are the speeds of the two stones just before they hit the ground?
Suppose one bullet with M=5.12g moving to the right with a speed of 250 m/s directed at 21.3 degrees above the horizontal collides, What is the magnitude of their common velocity immediately after the collision
A cart is moving horizontally with constant velocity Vx. The cart then shoots a ball with an initial velocity straight up relative to the cart. what is the horizontal distance traveled by the cart
An object of height 4.7 cm is placed 47 cm from a convex mirror of focal length having magnitude 39 cm. describe the properties of the image
two charged particles are moving with equal velocities of 7.60 ms in the x-direction. at one instant of time the first
A block of mass m1 = 1.75 kg and a block of mass m2 = 5.90 kg are connected by a massless string over a pulley in the shape of a solid disk having radius R = 0.250 m and mass M = 10.0 kg. These blocks are allowed to move on a fixed block-wedge of ..
An object, mass 2.96kg, moves in a horizontal circle with a radius of 3.8m. The object has the intial velocity of 32.6 m s-1. If the kinetic coefficient of friction between the object and the surface is 0.31, then number of completed revolutions (..
A concave spherical mirror has a radius of 11.0cm. Anobjeect of height 1.5cm is placed 15.0cm from the mirrir. Where is the image and How tall is the image
A 5.0 V battery storing 72.0 kJ of energy supplies 1.5 A of current to a circuit. How much energy does the battery have left after powering the circuit for 1.0 h
A 440-loop circular armature coil with a diameter of8.0cm rotates at 120rev/s in a uniform magnetic field of strength 0.30T, What is the rms voltage output of the generator
A laser beam is incident on two slits with a separation of 0.170 millimeter, and a screen is located 5.45 meter from the slits. obtain what is the wavelength of the laser light
A material has an index of refraction of 2.050. What is the critical angle for internal reflection inside a block
A man drags a 78.0-kg crate across the floor at a constant velocity by pulling on a strap attached to the bottom of the crate. Find the magnitude of the tension in the strap
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