Why is it that the incident angle isn't exactly the same as the reflection angle?

A ball with a mass of 1.5 kg strikes a wall with a velocity of 4.5 m/s to the left. The ball bounces off the wall with a velocity of 3.5 m/s to the right. If the ball is in contact with the wall for 0.20 s.

Imagine you want to get 1 kcal of energy from a cow. How much energy would the cow need to get from plants? Why?

Where are truss bridges located?

Consider a closed circuit with a 9-volt battery connected in series to a light bulb with a resistance of 3 ohms. What is the current flowing through the light bulb?

The swimming pool at perris hill plunge is 50 feet long and 25 feet wide. if the bottom of the pool is slanted so that the water depth is 3 feet at the shallow end and 15 feet at the deep end, what is the angle of elevation at the bottom of the pool?

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

As you found in Part A, your weight will be greater than normal when the elevator is moving upward with increasing speed.

Which of the following lists contains only examples of renewable sources of energy? A. wind, tidal, geothermal, and hydroelectric B. coal, solar, wind, and biomass C. fossil fuels and nuclear energy D. hydroelectric, petroleum, solar, and wind

How do particles of gases affect one another's motion

explain the sequence of events that happens when this fluid cools down. be sure to focus on what happen to the molecules and to the fluid in general. five event should be included in your answer