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A spectator, seated in the left field stands, is watching a baseball player who is 1.88 m tall and is 82 m away. On a TV screen, located 3.7 m from a person watching the game at home, the image of this same player is 0.14 m tall.
Find the angular size of the player as seen by
(a) the spectator watching the game live and
(b) the TV viewer.
(c) To whom does the player appear to be larger?
When 1250 J of heat are added to one mole ofan ideal monatomic gas, its temperature increases from 272 K to 275K. Find the work done by the gas during this process
A charge of +q is placed at the origin, while an identical charge is placed on the x axis at x = 0.50 meter. Estimate where should the third charge be placed
A 0.43 kg particle moves in an xy plane according to x(t) = - 13 + 4 t - 3 t3 and y(t) = 26 + 9 t - 7 t2, with x and y in meters and t in seconds. what is the angle of the particle's direction of travel
A 10.0-cm long wire has a diameter of 0.1 mm and a resistivity of 4.0 ´ 10-7 ohm-cm, A 6.0-volt battery is connected to the resistance, What current exists in the circuit
A small light source is placed in the very center of the bottom of a bucket of water. The light from the source shines upwards. You might assume the index of refraction of water is 1.33.
In the figure below a crowbar is used to lift a weight. If a down ward force of 228 N is applied to the end of the bar, how much weight does the other end bear? The crowbar itself has negligible weight. (Let r1 = 29.0 cm and r2 = 4.70 cm.)
A 5.15-g bullet is moving horizontally with a velocity of +359 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). What is the velocity of the second block after the bullet imbeds itself
When the projectile is at the top of its trajectory, an internal explosion causes it to separate into two fragments of equal mass. One of the fragments falls straight downward as though it had been free from rest.
Consider a two lens system by focal length +10 and +5 separated by 12 cm. locate the image of an object 50 cm from the +10 cm lens. What is its magnification? Is the image real or virtual?
q1. under the influence of its drive force a snowmobile is moving at a constant velocity along a horizontal patch of
an ideal gas initially at 20c and atmospheric pressure is placed in a solid cylinder with height 100cm and radius 5cm
Consider a wave propagating in the negative x-direction with frequency f = 100 Hz. What are the wavelength lambda and velocity y associated with this wave?
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