How do you find final kinetic energy?

How do you find final kinetic energy?

Kinetic Energy and Work

1. The kinetic energy of an object is defined as 2 KE = 1/2 * m * v.
2. The kinetic energy of an object depends on its velocity.
3. We can this combination of force and distance work, so KE(final) – KE(initial) = Work done on object.
4. In fact, it’s a little more complicated than that.

How do you find velocity in Ke 1 2mv2?

The formula for kinetic energy is KE = 1/2 mv^2. When the mass is reduced to 1/2 of m and the velocity is reduced to 1/2 v then the new kinetic energy is KE = 1/2 * 1/2 m * (1/2 v)^2.

What is the kinetic energy formula with an example?

In classical mechanics, kinetic energy (KE) is equal to half of an object’s mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.

What is total energy formula?

Total energy is the sum of all different types of energies a body can have. For a spring mass system, if the spring has mass, total energy is K. E+PE+½kx² where k is the spring constant.

What is the formula for work done?

To express this concept mathematically, the work W is equal to the force f times the distance d, or W = fd. If the force is being exerted at an angle θ to the displacement, the work done is W = fd cos θ.

What is energy measured in?

Joule

How do you calculate total energy used?

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 we calculate electricity?

Calculate Your Electricity Bill in 1 min by Simple Calculation. Electric Energy Bill Calculator

1. Example:
2. Total Consumed Units = 720.
3. E = P x t … ( Wh)
4. E = P x t ÷ 1000 … ( kWh)
5. Consumed Energy = Energy Used in Watts x Time in Hours.
6. E = P x t … ( Wh)
7. E = P x t ÷ 1000 … (
8. Energy Cost = Energy Used in kWh x Time in Hours.

How is electricity cost calculated?

How to Calculate Your Electric Bill

1. Multiply the device’s wattage by the number of hours the appliance is used per day.
2. Divide by 1000.
3. Multiply by your kWh rate.

How much cost is 1 unit of electricity?

5.35 per unit for the first one lakh units and Rs. 5.75 per unit for consumption beyond one lakh units. In all other areas, the new rates will be Rs. 5.35 and Rs.

How do you calculate electric bill in Excel?

Enter formula for Electricity Charges =IF(E5>200, E5*15,IF(E5>100, 1000+(E5-100)*12, E5*10)) in cell with cell reference F5. Enter formula for Surcharge = IF(F5>5000, F5*5%,IF(F5>1000, F5*3%, 0)) in cell with cell reference G5. Enter formula for Bill Payable =SUM(F5:G5) in cell with cell reference H5.

Is 1500 watts a lot of electricity?

Most electric heaters use 1,500 watts, but some are slightly less or slightly more. Since 1,000 watts equals 1 kilowatt, that means your heater uses 1.5 kilowatts of power. However, your electric bill is measured in kilowatt hours, which is the amount of energy used while running a 1-kilowatt appliance for one hour.

How much electricity does a 1000 watt grow light use?

You need to divide your wattage by 1,000 (1,000 kilowats in 1 watt). So, if we were to run a 1000 watt grow light 18 hours a day with the kWh rate we gave earlier, our formula would be: 1 x $0.1559 x 18 x 30 = $84.186/month.

How much does it cost to run a 1000W light?

Grow Light Operating Cost

	1000 watt Sodium	1000 watt Halide
Ballast Wattage	1100	1080
Cost per Month	$52.80	$51.84
Initial Lumens	130000	110000
Mean Lumens	126000	88000