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Q1. A loudspeaker of mass 15.0 is suspended a distance of h = 2.30 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.30. What is tension in each cable?
Q2. In a head-on collision, a car stops in 0.27 from a speed of 14. The driver has a mass of 70, and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt throughout that fraction of a second?
What horizontal force acts on the puck after the push
A 12 kg mass starts from rest and slides down an inclined plane 8.0 10-1 m long in 0.9 s. What net force is acting on the mass along the incline?
An electron librated from a hot filament cathode is attracted by an anode with a potential of 1200V positive with respect to the filament. Compute the speed of the electron when it strikes anode.
What is the change in length of the rope whilst the skier has the acceleration whose magnitude is 0.65 m/s2.
What is the speed of the center of mass
What is magnitude of the speed of the boat
Imagine a "free" electron and a "free" proton held midway between the plates of a charged equivalent plate capacitor. When released, how do their accelerations and directions travel compare.
How many 95W light bulbs can you use in a 120V circuit without tripping a 17A circuit breaker? (The bulbs are connected in parallel, which means that the potential difference across each light bulb is V.)
The scalar product of vectors and is +51.0. Vector has magnitude 9.00 and direction 28.0 west of south. If vector has direction 36.0 south of east, what is the magnitude of.
Compute the amplitude and phase at the observation screen
What mass (in grams) of steam at 100°C should be mixed with 257 g of ice at its melting point, in the thermally insulated container, to produce liquid water at 84.0°C.
Find out the coefficient of sliding friction
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