# Energy - practice problems

Direction: Solve each problem carefully and show your solution in each item.#### Number of problems found: 166

- Slices of ham

If 17 slices equal 70 calories, how many calories are in 5 slices? - Energy drink

You have 1/5 of an energy drink left. If you drink 1/5 of that, how much of your energy drink did you have left? - Gasoline price

At 34.4 cents per liter, how much will 42 liters of gasoline cost? - Decibel

A circuit has an input power of 92 mW. Its output power is 12 mW. What is the loss in decibels? - Determine 80705

The bulb is rated 6 V, 0.2 A. Determine the current rating of the bulb. - Efficiency 4072

What kind of work did the mixer with an efficiency of 30% do when it did 4.5 kWh of work? - Cubic

Convert 660 m³ of natural gas volume to energy units kWh. Combustion of 1 cubic meter of natural gas is released energy 10.55 kWh. - Workers 7767

Twelve workers would earn € 800 in 10 days. How many euros would 14 workers earn in 8 days? - Ounce

749 calories in a 7 - ounce serving. What is the unit rate? - Weighing 12481

A stone weighing 200g falls in a free fall for 3 s. Find its kinetic energy on impact. - Calories

A large order of McDonald's french fries has 500 calories. Of this total, 220 calories are from fat. Find the ratio of the calories from fat to total calories in a large order of McDonald's french fries. - Efficiency

What is the power output of a kettle 2 kW with an efficiency of 90%? - Kilometers 3029

The car consumed m liters of gasoline per s of kilometers. How many liters of gasoline does it consume per 100 km? - Bulb

A 60 W bulb consumes 0.12 kWh of electricity. How long did she stand light without a break? - MPG

252 miles a week fills up twice a week. Each fill is 38 gallons. What is the gas mileage of the car? - Transmission 44701

The electric field performs work 1610 J in the transmission of electric charge of 7 Coulombs between the heating coil terminals. Calculate the voltage between the terminals. - Average 41841

What work do we do if we pull out a 58mm nail with an average force of 350N? - Kinetic energy

A 100 kg car has a velocity of 15 m/s. what is the car's kinetic energy? - Calories 2

Ben eats approximately 2400 calories per day. His wife Sarah eats 5/8 as much. How many calories does Sarah eat per day? - The bulb

Calculate the voltage at the bulb's terminals; if the work 18 J is done to transfer particles with an electric charge of 6 C.

Do you have homework that you need help solving? Ask a question, and we will try to solve it.