00 g/cm air
solid
object
What is the mass of the object?
A 60.0 g
B 3840 g
C 4160 g
D 8000 g
The total weight of a gas-filled balloon is 1 500 N. The balloon rises at a constant speed
of 3m/s. What is the resultant force acting on the balloon during this ascent?
AON
B 500N
C 1500N
-D 450
​

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

What is an electric motor? explain its operation. 2-3 sentence

It is necessary to determine the specific heat of an unknown object. the mass of the object is 201.0g it is determined experimentally that it takes 15j to raise the temperature 10°c. what is the specific heat of the object? 3,020,000 j/kg ∙ k 1500 j/kg ∙ k 0.00130 j/kg ∙ k 7.46 j/kg ∙ k