An asteroid exerts a 360-N gravitational force on a nearby spacecraft. The 360-N force on the spacecraft is directed
A) toward the asteroid.
B) away from the asteroid.
C) toward the Sun.
Answer: A
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Which of the following is a reason why early living organisms on Earth could not have survived on the land surface?
a. the lack of an ozone layer b. the lack of oxygen in the atmosphere c. the fact that these organisms were single-celled d. the lack of oxygen
Uncertainty Principle Using Energy and Time: If the maximum possible accuracy in measuring the energy of a particle increases, the maximum possible accuracy in measuring its lifetime will
A. increase. B. decrease. C. not be affected.
A 5.00-g bullet is fired into a 950-g block of wood suspended as a ballistic pendulum. The combined mass swings up to a height of 8.00 cm. What was the kinetic energy of the bullet immediately before the collision?
a. 1.4E+2 J b. 1.5E+3 kJ c. 3.9E–3 J d. 1.4E+8 J e. 1.5E+2 J
In an isothermal process, there is no change in
A) pressure. B) temperature. C) volume. D) heat. E) internal energy.