At 2.5 seconds, the helicopter has a kinetic energy of 20 J. What is its mechanical energy at that time?

stephanie, who has a mass of 75 kg is driving and suddenly slams on her brakes to avoid hitting a student crossing blanco road. she is wearing her seatbelt, which brings her body to a stop at 0.5 seconds.

I am planning to make two dives. The first dive is to 60 feet for 45 minutes, and the second dive is to 60 feet for 35 minutes. How long would I have to stay on the surface (minimum surface interval) to do these two dives safely?

Light is bent as it enters a tank of water from air. It is bent to a greater angle when it goes from air to a glass block. Predict what will happen as a beam of light is shone on a diamond. A) Light would be bent less than it would in water.

How much work is done by a resistor in 2 seconds, as a 10V current passes through it at 2 columbs per second?

The mass of a density bottle is 20g when empty 70g when full of water and 695g when full of another liquid. Calculate the density of the other liquid (take density of water as 1g/cm3)

Dr. Arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode.

Stephen buys a new mop he travels 3 km south and the. 4 km east and then 3km north how far does he need to go to get back. To where he started

The elements with the largest atomic radii are found in the

Students will explain, distinguish the difference between the 4 states of matter

Name one way that a mixture can be separated