An object with a mass of 100 grams (0.100 kg) is dropped from a certain height and has a velocity of 60 meters/second. If the potential energy of this object is 179.99 joules, how high was the object when it was dropped?

When combined in the correct ratio, hydrogen and oxygen atoms can form water. These particles that water is made of are example of

Which of the following statements is correct about the four fundamental forces? A The Strong Nuclear Force keeps the positively charged neutrons together in the nucleus and from atom to atom.

A 10 N force pulls to the right and friction opposes 2 N. If the object is 20 kg, find the acceleration.

Biomaterials made with nanotechnology are currently used for organ repair, skin transplants, and cell growth. organ repair, quantum dots, and carriers. quantum dots, OLEDs, and carriers. cell growth, OLEDs, and skin transplants.

Snow tends to sublime outside during cold, clear winter days when the atmospheric pressure is low. During this proces A) the density of water is decreasing. B) the temperature of the water is decreasing. C) the volume of the water is decreasing.

When you jump straight up as high as you can, what is the order of magnitude of the maximum recoil speed that you give to the Earth? Model the Earth as a perfectly solid object.

Consider the Sun and Earth as a single system. How does the law of conservation of energy apply to this system? A) The energy from the Sun that reaches Earth is destroyed by Earth.

Based on the law of conservation of energy, which statement is false Energy is lost when machines don't work right. We can't add more energy to the universe. We can't destroy energy that exists in the universe.

A 120-g rubber ball is thrown with a speed of 10 m/s at an oncoming 900-kg car which is approaching at 30 m/s, and undergoes a one-dimensional elastic collision with the car.

Name two index fossils. Why are these fossils important to the practice of relative aging?