The speed of sound in air at 0is 331 m/s. What is the velocity of sound in air at a temperature of 30?

A. 336 m/s
B. 338 m/s
C. 340 m/s
D. 342 m/s
E. 349 m/s


E. 349 m/s

Physics & Space Science

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Precession of the rotation axis of Earth is caused by

a. the force of gravity from the sun and moon on Earth's equatorial bulge. b. the force of gravity from the sun and Jupiter on the Earth-moon system. c. the magnetic field of Earth. d. the formation and subsequent melting of glaciers during the ice-ages. e. the impact of asteroids.

Physics & Space Science

The celestial object _______________ is just one of many small objects that orbit the Sun beyond Neptune

Fill in the blank(s) with correct word

Physics & Space Science

An observer located at Earth's North Pole (90°N

latitude) would observe that all of the stars a) move eastward across the sky. b) rise in the east and set in the west. c) move in concentric circles about the North Star. d) are completely stationary in the sky.

Physics & Space Science

A car has a mass of 930 kg has wheels with a radius of 35 cm, and the distance between the axles is 3.1 m. The coefficient of static friction between the tires and the road is 0.52

It is equipped with anti-lock brakes so that the tires do not slide when it is braking. If the weight of the car is supported equally by the four tires, what is the total torque on the tires exerted by the forces between the tires and the horizontal road when there is maximum braking, i.e. when the tires are about to slip? A) 1.2 × 102 N m B) 1.7 × 103 N m C) 1.2 × 104 N m D) 1.6 × 102 N m E) 1.4 × 104 N m

Physics & Space Science