A brick of mass 2.3 kg is lifted to a height of 1.9 m. How much gravitational potential energy is added to the brick? Acceleration due to gravity is g = 9.8 m/s2.

What's a shield volcano

Which property is common to spiral galaxies? open clusters in the halo. globular clusters in the nucleus. on-going star formation and emission nebula in the arms very little internal structure.

A railroad diesel engine coasting at 1.2 m/s runs into a stationary flatcar that has a mass of 1000 kg. The diesel weighs 5 times as much as the flatcar.

Two players alternately roll an N - sided die. The player who fails to improve upon the previous roll loses. What is the probability that the first player wins? (I wanna see how sharp the community is, Good luck)

The volcano appeared to be ejecting material to a height of 2.00x10 given the acceleration due to gravity is 1.8 m/s find the initial velocity

If a girl is standing in front of a smooth surface from which a sound is reflected the girl may hear

The buoyant force acting on an object is always equal to A. the weight of the submerged portion of the object B. the mass of the submerged portion of the object C. the weight of the fluid the object displaces

Which of the following statements are true about gravity? Check all that apply. A. Gravity doesn't exist between two stars that are far far away from each other. B. Gravity exists only near Earth. C.

A ball which is dropped from the top of a building strikes the ground with a speed of 30m/s. Assume air resistance can be ignored. The height of the building is approximately

Water in central Texas comes from the Edwards Aquifer and tends to be hard. Which of the following would you expect to find in this water? O A. Carbon dioxide O B. Calcium ions O C. Biotic factors O D. Oxygen gas