Physics, 04.02.2020 19:54 Huntruh2842

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?

a. the force of friction

b. the force of tension

c. the force of air resistance

d. the restoring force

e. the normal force

Answers: 2

Show answers

Another question on Physics

Physics, 22.06.2019 08:00

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

Answers: 3

Answer

Physics, 22.06.2019 13:40

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

Answers: 2

Answer

Physics, 22.06.2019 16:50

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.

Answers: 2

Answer

Physics, 22.06.2019 18:00

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)

Answers: 3

Answer

You know the right answer?

In addition to gravity, what is the other predominant force that affects the motion of a pendulum? <...

Questions