A 1000-kg whale swims horizontally to the right at a speed of 6.0 m/s. It suddenly collides directly with a stationary seal of mass 200 kg. The seal grabs onto the whale and holds fast
What is the speed of these two sea creatures just after their collision? You can neglect any drag effects of the water during the collision. A) 0.00 m/s
B) 3.0 m/s
C) 4.0 m/s
D) 5.0 m/s
E) 6.0 m/s
D
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What type of electromagnetic radiation does Chandra collect?
a. visible light b. ultraviolet c. microwave d. infrared e. X-ray
The energy of an ultraviolet photon is ________ a photon in the visible part of the spectrum.
A. shorter than B. longer than C. higher than D. lower than E. faster than
The time interval during which a nucleus has a 50% probability of decaying is its half-life
a. True b. False Indicate whether the statement is true or false
A rod of 2.0-m length and a square (2.0 mm × 2.0 mm) cross section is made of a material with a resistivity of 6.0 × 10^?8 ? / m. If a potential difference of 0.50 V is placed across the ends of the rod, at what rate is heat generated in the rod?
a. 3.0 W b. 5.3 W c. 8.3 W d. 1.3 W e. 17 W