Five children are pushing on a snowball; each is pushing with a force of 10.0 N. Each is pushing at an angle of 45relative to his neighbor. What is the net push on the ball?

A. 0 N
B. 24.1 N
C. 27.1 N
D. 17 N
E. 50 N


B. 24.1 N

Physics & Space Science

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

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A novice marksman fires a rifle while holding the butt of the rifle a couple of centimeters away from his shoulder. Explain what happens in terms of the physical principles involved

What will be an ideal response?

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If there is a net torque on a wheel, then

A. the wheel cannot be spinning. B. the angular momentum of the wheel cannot change direction. C. there must be a net force on the wheel. D. the wheel must have a nonzero angular acceleration.

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An object and a screen are separated by 15.0 cm. A convex lens is placed between them, 6.82 cm from the object. In this position it causes a sharp image of the object to form on the screen. What is the focal length of the lens?

a. 4.69 cm b. 41.0 cm c. 3.72 cm d. 12.5 cm e. 4.09 cm

Physics & Space Science