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Q1. An instructor wants to use a lens to project the real image of a light bulb onto a screen 1.23 m from the bulb. In order to get the image to be two times as large as bulb, what focal length lens will be required?
Q2. l= 50 m at a speed that increases with time, v = (0.2 t2) m/s. Find the magnitudes of the boat's velocity and acceleration at the instant t = 3 sρ Starting from rest, motorboat travels around a circular path of?
Compute the momentum of the bullet
What is the speed of the projectile
The coefficient of kinetic friction is 0.50. A horizontal force of magnitude 87 N begins to pull directly on the block. In unit-vector notation, what are the resulting accelerations of (a) block and (b) slab.
What is magnitude of the gravitational attraction
However, the current begins to decrease as the resistive element warms up. When the toaster reaches its final operating temperature, the current has dropped to 1.53 A.
What is the height of the hill . Find the coefficient of kinetic friction between flight bag and floor.
A 100-kg halfback running north with a speed of 12 m/s is tackled by a 110-kg opponent running south with a speed of 4.0 m/s. If collision is completely inelastic and head-on, compute the speed of the players just after the tackle.
What is the kinetic energy
A kid fires water horizontally from a squirt gun held 1.6 above the ground. It hits other kid 2.4 away squares in the back, at a point 0.85 above the ground. What was the initial speed of the water.
A jeweler working with a heated 43 gram gold ring must lower the ring's temperature t make it safe to handle. If the ring is initially at 94 degrees Celsius, what mass of water at 22 degrees Celsius is necessary to lower the ring's temperature to 38 ..
How to generate a constant deceleration
Then find the force between them as a function of distance h. describe why the sign of the force does (or does not) make sense to you.
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