You are holding on to one end of a long string that is fastened to a rigid steel light pole. After producing a wave pulse that was 5 mm high and 4 cm wide, you want to produce a pulse that is 4 cm wide but 7 mm high. You must move your hand up and down once,

a. the same distance up as before, but take a shorter time. b. the same distance up as before, but take a longer time. c. a smaller distance up, but take a shorter time. d. a greater distance up, but take a longer time. e. a greater distance up, but take the same time.


E

Physics & Space Science

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According to Einstein's theory of relativity, how much energy is contained in the material of a one kilogram rock that is at rest on the ground?

A) None at all. B) 3 × 1016 joules C) 9 × 1016 joules D) 9 × 1010 joules E) 10-16 joules

Physics & Space Science

Rupel pushes a box 7.00 m by applying a 25.0-N horizontal force. What work does she do?

a. 3.57 J b. 0.280 J c. 175 J d. –175.0 J e. 25.0 J

Physics & Space Science

A proton and an alpha particle are moving perpendicular to a uniform magnetic field with the same speed. If the velocity of the proton is at an angle of 20° with respect to the magnetic field direction, at what angle to the magnetic field direction would the alpha particle be moving if it experiences the same magnitude acceleration as the proton? The alpha particle has 4 times the mass of the

proton and twice its charge. a. 43° c. 62° b. 10° d. 9.8°

Physics & Space Science

When rock is broken down into smaller and smaller pieces, we say the rock has undergone

A) chemical weathering. B) mechanical weathering. C) erosion. D) lithification.

Physics & Space Science