The rocket equation describes how a vehicle's final speed depends on

A) its mass
B) the propellant's velocity
C) the type of the fuel used
D) its aerodynamic shape


B

Physics & Space Science

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Brown (155) reports that much toxic material is illegally dumped

Violators have loosened tank-truck valves and dumped contaminants along the road (a New York company spilled out polychlorinated biphenyls—PCBs—from a truck onto 270 mi of North Carolina highway). What are the attitudes of company officials that could tolerate this atrocity? Is indiscriminate dumping a national pastime? Where do you dispose of trash and garbage on long car trips?

Physics & Space Science

After a supernova event, what is left behind?

A) always a white dwarf B) always a neutron star C) always a black hole D) either a white dwarf or a neutron star E) either a neutron star or a black hole

Physics & Space Science

The _______________ supposes that planets form in the rotating disks of gas and dust around young stars

Fill in the blank(s) with correct word

Physics & Space Science

A 2.0-kg object moving 3.0 m/s strikes a 1.0-kg object initially at rest. Immediately after the collision, the 2.0-kg object has a velocity of 1.5 m/s directed 30° from its initial direction of motion. What is the x component of the velocity of the 1.0-kg object just after the collision?

a. 3.7 m/s b. 3.4 m/s c. 1.5 m/s d. 2.4 m/s e. 4.1 m/s

Physics & Space Science