How much heat is released when 30 g of water at 96°C cools to 25°C? The specific heat of water is 1 cal/gºC.

Oa

b

ano

2,130 cal

0.213 cal

-2,130 cal

-0.213 cal

A hot-air balloon is rising straight upward with a constant of 6.5 m/s. When the basket of the balloon is 20.0 meters above the ground a bag of sand comes loose.

Identify the volume units that are greater than one liter

A 30.0 kg dolphin decelerates from 12.0 to 7.00 m/s in 2.60 s to join another dolphin in play. What average force (in N) was exerted to slow him if he was moving horizontally? (The gravitational force is balanced by the buoyant force of the water.

A solid disk rotates in the horizontal plane at an angular velocity of rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.17 kg. m2.

If you are standing at a beach on Earth at the same time that the shadow of the moon falls across your location, what event would you be able to witness at that time? A solar eclipse B lunar eclipse C low tide D full moon

What is the total resistance of the circuit shown below?

As a clinical chemist in charge of the testing of blood samples. You are required to mix a solution of sodium chloride with water in the ratio of 2:5.

A positively charged object will attract an object that has A. a negative charge B. a smaller positive charge C. no charge D. a larger positive charge

Whats the usefulness or inconvenience of frictional force by turning a door knob?

How does the direction of acceleration compare with the direction of the net force that produces it