Planet Z has diameter 1.8 * 107 m. On the planet's surface, the acceleration due to gravity is 19.5 m/s2. What is the mass of the planet? Note: The constant of universal gravity (G) equals 6.674 * 10-11 N ⋅ m2/kg2.

Why do astronauts on the moon bounce when they walk?

Which phrase best describes wave motion? a. movement of energy through space or a medium b. movement of matter through space c. movement of energy within a partice d. movement of air molecules through a medium

A paper airplane is thrown to the north from the top of a cliff with a speed of 2 km/h. the paper airplane land 15 minutes (0.25 hours) later. how far from the cliff did the paper airplane land? A. 0.25 km to the North B. 0.5 km to the North C. 0.

Is the distance a baseball travels in the air after being hit distance a baseball travels in the air after being hit a discrete random variable, a continuous random variable, or not a random variable?

A compact car a maximum acceleration of 3.0 m/s^2 when it carries only the driver and has a total mass of 1300 kg. What is the maximum acceleration after picking up their luggage, adding an additional 400 kg of mass?

Is the air a good conductor or electricity or a good insulator?

Which lists only metalloids? arsenic (As), sulfur (S), and polonium (Po) antimony (Sb), tellurium (Te), and gallium (Ga) boron (B), germanium (Ge), and tellurium (Te) polonium (Po), aluminum (Al), and silicon (Si)

3. A traffic light is suspended by two cables. What should be the angle between the cables (0) so that the tension in each cable will be equal to the weight of the traffic signal light (W=T, = T) ?

Which theory suggests that the moon and the earth formed at the same time from dust and the solar nebula that formed the sun? A.) impact theory B.) co formation theory C.) capture theory D.) synchronous theory

If you have a pet that isn't getting nourishment from the food it eats, which organ might have a problem?