A 1500-kg car accelerates from rest to 25 m/s in 7.0 s. What is the average power delivered by the engine? (1 hp = 746 W)
A) 60 hp
B) 70 hp
C) 80 hp
D) 90 hp
D
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The Chandrasekhar limit tells us that
a. accretion disks can grow hot through friction. b. neutron stars of more than 3 solar masses are not stable. c. white dwarfs more massive than 1.4 solar masses are not stable. d. stars cannot travel through space too fast e. stars with a mass less than 0.5 solar masses will not go through helium flash.
What is the most abundant element in Earth's crust? What is the second most abundant element?
What will be an ideal response?
On a winter day the temperature drops from –5°C to –15°C overnight. If a pan sitting outside contains 0.40 kg of ice, how much heat is removed from the ice for this temperature change?
Geology's best tool for establishing absolute (numerical) geologic time is called ______________ dating
Fill in the blank(s) with correct word