A 50 kg student climbs 3m to the top of a set of stairs. Calculate the change in the student's gravitational potential energy from the bottom to the top of the stairs.

A network engineer is subnetting the 10.0.240.0/20 network into smaller subnets. Each new subnet will contain between a minimum of 20 hosts and a maximum of 30 hosts. Which subnet mask will meet these requirements? a. 255.255.224.0 b. 255.255.240.

Why there will be a change in the sole of the shoes after using many days?

A heavy, 6 m long uniform plank has a mass of 30 kg. It is positioned so that 4 m is supported on the deck of a ship and 2 m sticks out over the water. It is held in place only by its own weight.

What force affect objects on earth every day

A student measured the density of gold to be 18.5g/cm3. the accepted value of the density of gold is 19.3g/cm3. what is the percent error of the students measurement

From the fact that virtually every galaxy is moving away from us and more distant galaxies are moving away from us at a faster rate than closer ones, we conclude that

A uniform electric field is oriented in the - z direction. The magnitude of the electric field is 6500 N/C.

1. A type of wave that transfers energy where the particles in the medium move parallel to the direction in which the energy is traveling is called a

A 50 kg student climbs 3m to the top of a set of stairs. Calculate the change in the student's gravitational potential energy from the bottom to the top of the stairs.

Which of the following is NOT an appropriate acceleration unit? A) year/day/mile B) meter/sec/sec C) mile/hour/sec D) centimeter/sec/year