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5 of 10

A horse canters away from its trainer in a straight line, moving 40 m

m

away in 8.8 s

s

. It then turns abruptly and gallops halfway back in 1.6 s

s

.

Which electromagnetic wave transfers the least amount of energy? A. gamma B. X-ray C. ultraviolet D. microwave

If one of the masses of the Atwood's machine below is 3.2 kg, what should be the other mass so that the displacement of either mass during the first second following release is 0.23 m? Assume a massless, frictionless pulley and a massless string

Infer how distance and speed in the motions of a clock parts are used to measure time

A student wants to build a circuit with four light bulbs and one bell. A student wants to place a switch in the circuit so that only one light will still be on and the bell will still ring when the switch is opened

Do you think that the color of materials used for designing the seating of wheel chair has any role in regulating the heat? Explain with proper scientific reasons

Two copper wires with different diameters are joined end to end. If a current flows in the wire combination, what happens to electrons when they move from the larger-diameter wire into the smaller-diameter wire?

A baseball player is warming up and tosses a ball straight up into the air. The ball travels up until it reaches some maximum height, and then falls back down to the player/'s hand.

Volume can be measured in liters or cubic meters. a. T b. F

A spring with a spring constant of 1200 N/m has a 55-g ball at its end. The energy of the system is 5.5J. What is the amplitude of vibration?

Force F1 acts on a particle and does work W1. Force F2 acts simultaneously on the particle and does work W2. The speed of the particle does not change. Which one of the following must be true? a. W1 is zero, and W2 is positiveb. W1 = - W2c.