Explain why only very large stars can form black holes

You have two substances a brick of gold and a brick of bronze how are they similar and different?

A 100N sack of potatoes is suspended by a rope. A person pushes sideways on the sack with a force at 40N. What is the tension in the rope.

You hear the engine roaring on a race car at the starting line. Predict the changes in the sound as the race starts and the car approaches the camera. A) The sound of the engine will get louder and the pitch lower.

How much heat must be added to 50.0g of aluminum to raise its temperature from 25°C to 125°C

A heat transfer of 9.8 ✕ 105 J is required to convert a block of ice at - 12°C to water at 12°C. What was the mass of the block of ice?

A basketball player drops a 0.60-kg basketball vertically so that it is traveling at 6.3 m/s when it reaches the floor. The ball rebounds upward at a speed of 5.3 m/s.

Describe how humans' actions and natural processes have modified coastal regions in Louisiana and other locations

Visualize five horizontal sedimentary strata exposed in a cliff or canyon wall identified by consecutive numbers, 1 being the lowest bed and 5 being the highest. Which of the following statements concerning the strata are true? a.

The characteristics that follow are characteristics of two of Galileo's surviving double-convex lenses. The numbers given are magnitudes only; you must supply the correct signs. L 1: front radius 950 mm, rear radius 2700 mm, refractive index 1.

Which car has the most kinetic energy? A car of mass 1500 kg with speed 5 m/s or A car of mass 1300 kg with speed 3 m/s or a car of mass 1200 kg with speed 2 m/s or a car mass 1400 kg with speed 4 m/s