How fast must something be traveling if its mass increases by 10%?
What will be an ideal response?
1.25 × 108 m/s
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When mass is accreted into a black hole, what fraction of the total mass-energy can be radiated away?
A) 0.007% B) 0.08% C) 1.4% D) 20% E) 50%
In a Young's experiment, the paths from the slits to a point on the screen differ in length, causing destructive interference at the point. Which of the following path difference would cause this destructive interference?
a. 5?/2 b. 3?/4 c. 4? d. None of the above.
A 25-kg wooden sign 3.0-m long by 2.2-m high is supported by two nails along its left edge, one at the bottom of the sign and the other at the top. The nails are on the same vertical line
Find the horizontal component of the force exerted by the upper nail. A) 250 N B) 120 N C) 360 N D) 170 N E) 280 N
In a section of horizontal pipe with a diameter of 3.00 cm the pressure is 5.21 kPa and water is flowing with a speed of 1.50 m/s. The pipe narrows to 2.50 cm. What is the pressure in the narrower region?
A) 4.00 kPa B) 7.50 kPa C) 5.82 kPa D) 6.42 kPa E) 4.61 kPa