When energy is transformed, the amount of usable energy?

A diver swims in a pool that is 30 m deep. the diver swims 20 m above the bottom. if the diver descends to 10 m above the bottom, what is the absolute pressure?

Can someone list some era's?

The study of the Earth's magnetic field is known as A. isochronism B. paleomagnetism C. magnetism D. topography

Two objects (38.0 and 17.0 kg) are connected by a massless string that passes over a massless, frictionless pulley. The pulley hangs from the ceiling. Find (a) the acceleration of the objects and (b) the tension in the string.

If a caterpillar is moving in a straight line at a speed of 7 cm/s, how long will it take the caterpillar to reach a green, leafy plant that is 56 cm away?

2. A circuit consists of a 10.0-ohm resistor, a 15.0-ohm resistor, and a 20.0-ohm resistor connected in parallel across a 9.00-volt battery. What is the equivalent resistance of this circuit? (1) 0.200 12 (3) 4.62 1 (2) 1.95.22 (4) 45.012

What technology makes up the transducer? a. A phased array c. A PET scan b. An x-ray d. A laser

Explain how birthrates and death rates influence the size of population.

What happens to the resistance of a wire as its length increases? A. The resistance decreases. B. The resistance is not affected by a change in wire length. C. The resistance alternates between high and low values. D. The resistance increases.

What is true about molecular compounds that dissolve in water