Press "Enter" to skip to content

How do the units of work and power compare Brainly?

How do the units of work and power compare Brainly?

Answer: The unit of work is Joule and Unit for power is Watt which is equal to Joule per second. Explanation: Work is defined as the unbalanced force which displaces an object. It is also defined as the energy consumed. The units of work is Joules.

Does Work and Power have the same unit?

Since energy and work are two sides of the same coin, they are measured with the same units. The SI unit of energy/work is the joule (J), named for English physicist James Prescott Joule (1818 – 1889).

How do the units of work and power compare the unit for work is a watt The unit for power is a joule which is a watt second the unit for work is a watt The unit for power is a joule which is a watt per second the unit for work is a joule the unit for power is a watt which is a joule second the unit for work?

Power equals work (J) divided by time (s). The SI unit for power is the watt (W), which equals 1 joule of work per second (J/s). Power may be measured in a unit called the horsepower. One horsepower is the amount of work a horse can do in 1 minute, which equals 745 watts of power.

What is the difference and similarities of work energy and power?

Work is defined as the process of energy transfer to the motion of an object through the application of force. The SI unit of work is Joule. Power is defined as the amount of energy transferred in unit time.

How does a person get energy?

This energy comes from the food we eat. Our bodies digest the food we eat by mixing it with fluids (acids and enzymes) in the stomach. When the stomach digests food, the carbohydrate (sugars and starches) in the food breaks down into another type of sugar, called glucose.

How do you calculate energy consumption?

As every engineer knows, energy calculation is straightforward. The unit of electrical energy is the kilowatt-hour (kWh), found by multiplying the power use (in kilowatts, kW) by the number of hours during which the power is consumed. Multiply that value by the cost per kWh, and you have the total energy cost.

How do you calculate the power consumption of an electric car?

The acceleration and braking energies are calculated separately and then summed up to give the total energy. By dividing the last calculated value of the total energy ( 3205.39 Wh ) to the total length of the WLTC drive cycle ( 23.266 km ), we get the average energy consumption of the vehicle, 137.8 Wh/km .

How much power is required to move a car?

There is a direct conversion between horsepower and watts: 745.7 watts is 1 horsepower. Car motors for modern vehicles range from about 50 horsepower to 500 horsepower or more. An average medium size family car might have a 150 HP motor. To duplicate that with an electric motor you would need 111,855 watts of power.

How much does an electric car make your electric bill go up?

If electricity costs $0.13 per kWh and the vehicle consumes 33 kWh to travel 100 miles, the cost per mile is about $0.04. If electricity costs $0.13 per kilowatt-hour, charging an EV with a 200-mile range (assuming a fully depleted 66 kWh battery) will cost about $9 to reach a full charge.

How much energy is needed to charge an electric car?

Electric vehicles can be charged at power draws comparable to various household appliances. Most electric vehicles charging at home on a 240-volt level 2 charger will draw about 7,200 watts or less. For comparison, a typical electric furnace draws about 10,000 watts and a water heater uses 4,500 watts.