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β 7y ago300 W
Jovany Nolan
The work done to move the box is given by force multiplied by distance, which is 300 N * 10 m = 3000 J. Power is the rate at which work is done, so dividing the work done by the time taken gives the power required: 3000 J / 10 s = 300 W. Therefore, 300 watts of power is required to move the box.
300 W
Power is calculated as work done divided by time taken. The work done is force multiplied by distance, which in this case is 200 N * 10 m = 2000 J. Plugging in the values, the power required would be 250 Watts.
Power (the rate of energy use) is calculated as the product of the energy exerted (work) divided by the time over which the energy is released. P = W/t To solve the example, multiply the force in Newtons by the displacement in meters to find the work in joules, then divide by the time to find the power required, in watts (joules/second, or kg-m2/sec3) 100 N x 10m = 1000 joules divided by 10 seconds = 100 watts
The distance from the sun to the Earth is about 150 million kilometers. To convert this to meters, we multiply by 1000 to get 150 billion meters.
Your power output would be 100 Watts. This can be calculated by dividing the work done (force x distance) by the time taken to do the work (10 seconds).
First mulitiply Newton x meter to get the energy (or work) required. Then divide the result by the time to get the power.
Power = (energy) / (time) = (35 x 5) / 19 = 175 newton-meters / 19 seconds = 9.2105 watts (rounded)
The person's speed is 2 meters per second. The power required for him to accomplish that depends on his weight, on his efficiency of movement, on whether he's moving horizontally or vertically, etc., all of which the question neglects to specify.
The work required to move the truck is 600 N (600 kg-m/sec2) times 30 meters = 18000 joules. If this is done in 15 seconds, the average power was 1200 watts (kg-m2/sec3).
300 W
The power required to lift the rock onto the ledge can be calculated as work done divided by time. In this case, it is 3400J / 4s = 850 watts. Therefore, 850 watts of power is required to lift the rock onto the ledge in 4 seconds.
65 km/h = 18.056 meters / second60 / 18.056 = 3.323 seconds so it takes approximately 3.3 seconds
two watts a second
Power is calculated as work done divided by time taken. The work done is force multiplied by distance, which in this case is 200 N * 10 m = 2000 J. Plugging in the values, the power required would be 250 Watts.
Depends on how fast your walking.
The total work done or energy transferred is equal to the product of the force and the displacement in the direction of the force applied. In this case it would be 300N x 10m to get 3000J. This energy is transferred in 10 seconds and since power is energy transferred per unit time... 3000J divided by 10 seconds equals 300 Watts or 300 Joules per second.
If it takes 15 seconds for an echo to be heard, the distance between you and the reflecting surface (such as a wall, cliff, or building) is approximately 2,250 meters (15 seconds multiplied by the speed of sound at sea level, which is about 343 meters per second).