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A telescope mirror has a radius of curvature of 18.0 m. It is used to take a picture of the Moon (radius 1740 km, distance from Earth 385,000 km). What is the diameter of the image of the Moon produced by this mirror?
A 100 kg crate is being pushed across the horizontal floor by a force that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.230. What must be the magnitude of, so that the net work completed by it and the kinetic..
Starting with an initial speed of 5.00 m/s at a height of 0.335 m, a 1.50-kg ball swings downward and strikes a 4.60-kg ball that is at rest, How high does each ball swing after the collision
A 3.00-kHz tone is being produced by a speaker with a diameter of 0.160 m. find the change in the diffraction angle
A planet of total mass M and radius R has a non-uniform density such that p(r) = po (1-r/R), Determine the gravitational field g(r) at a point r ? R inside the planet
The electron gun in a TV picture tube accelerates electrons between two parallel plates 1.5cm apart with a 27 kV potential difference between them.
A car started frm rest and accelerated for 5s at 6.00m/s2.Then it stayed at a constant speed for 20 s. It next slowed down at 3m/s2 until it came to a stop? how far did it travel during the first 5 s.
A drag racer starts from rest and accelerates for 12.3 s with a constant acceleration until it has travelled 400 m. What is the stopping distance for the drag racer
In order to find the density of an unknown material Susan measured the mass of a cube made out of this material and the length of its side
A fireworks rocket is launched vertically upward at 40 m/s. At the peak of its trajectory, When does the second fragment reach the ground
A hydrogen atom initially in its ground state absorbs a photon and ends up in the n=6 state. Calculate the energy of the incident photon
A 500.0 g mass at the end of a spring vibrates 3.0 times per second, What is the maximum velocity of this mass
You launch a 5kg ball from a height of 1 meter. Find the speed of the ball and its kinetic energy at the top of its trajectory, find the velocity and speed of the ball when it reaches the ground
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