The Sun traces a path along the ecliptic in a period that is longer than 365 days

a. True
b. False
Indicate whether the statement is true or false


True

Physics & Space Science

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What is the explanation for the pattern of granulation seen on the visible surface of the Sun?

a. The granules form the base of a circulation pattern that extends from the photosphere to the outer corona. b. The granules are regions of nuclear energy generation in the Sun's photosphere. c. Each granule contains a strong magnetic field, which compresses and heats the gas underneath it. d. The granules are the tops of hot gas that have risen from the Sun's convective zone.

Physics & Space Science

A girl throws a stone straight down from a bridge. The stone leaves her hand with speed of 8.00 m/s at a height of 12 m above the water below. How much time does it take for the stone to hit the water?

A) 2.58 s B) 0.95 s C) 1.8 s D) 0.41 s E) 17.3 s

Physics & Space Science

A 1.0-kg ball is attached to the end of a 2.5-m string to form a pendulum. This pendulum is released from rest with the string horizontal. At the lowest point in its swing when it is moving horizontally, the ball collides elastically with a 2.0-kg block initially at rest on a horizontal frictionless surface. What is the speed of the block just after the collision?

a. 2.3 m/s b. 4.7 m/s c. 3.5 m/s d. 3.0 m/s e. 7.0 m/s

Physics & Space Science

A metal blade of length L = 60 cm spins at a constant rate of 15 rad/s about an axis that is perpendicular to the blade and through its center

A uniform magnetic field B = 4 mT is perpendicular to the plane of rotation. What is the magnitude of the potential difference between the center of the blade and either of its ends? A) 2.7 mV B) 1.3 mV C) 5.1 mV D) 9.1 mV E) 7.8 mV

Physics & Space Science