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xz_007 [3.2K]
3 years ago
6

How much work will a 500 watt motor do in 10 seconds?

Physics
2 answers:
vivado [14]3 years ago
7 0

Answer:

Watts are units used to measure power. power can be defined as rate of energy transfer

500 watts means - 500 J of energy per second

in 1 second - 500 J of work is done

therefore within 10 seconds - 500 J/s x 10 s = 5000 J

work of 5000 J is carried out in 10 seconds

Explanation:

Viktor [21]3 years ago
4 0

Answer:

50j

Explanation:

Watts are units used to measure power. power can be defined as rate of energy transfer

500 watts means - 500 J of energy per second

in 1 second - 500 J of work is done

therefore within 10 seconds - 500 J/s x 10 s = 5000 J

work of 5000 J is carried out in 10 seconds

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What is oxygen an example of? a mixture, an element, a compound, or a solution
soldi70 [24.7K]

Answer: element

Explanation:

Couldn't be a compound because contains same type of atoms. Can't be a mixture either because not physically mixed or anything. Isn't a solution ofc because oxygen is a gas.

7 0
4 years ago
If the vertical initial speed of the ball is 2.5 m/sm/s as the cannon moves horizontally at a speed of 0.55 m/sm/s , how far fro
barxatty [35]

Answer:

0.281 m

Explanation:

From vᵧ = uᵧ - gt

where vᵧ = final vertical component of the velocity

uᵧ = vertical component of the initial velocity = 2.5 m/s

g = 9.8 m/s²

At maximum height, vᵧ = 0 m/s

So,

Time to reach maximum height, t = uᵧ/g = 2.5/9.8 = 0.255 s

Total time of flight, T = 2 × time to reach maximum height

T = 2 × t = 2 × 0.255 = 0.510 s

Range of the cannon = uₓ T = 0.55 × 0.510 = 0.281 m

Note uₓ = horizontal component of the initial velocity.

7 0
3 years ago
A loudspeaker in a parked car is producing sound whose frequency is 20,563 Hz. A healthy young person with normal hearing is sta
Katarina [22]

Answer:

Explanation:

A.

Standing near the loudspeaker you cannot hear its frequency buy as the car moves away from it the frequency reduces.

6 0
4 years ago
The honda insight, a hybrid electric vehicle, has an u.s. environmental protection agency (epa) gas mileage rating of 57 mi/gal
sergiy2304 [10]
Convert mL to gallons as follows:

355 mL = 0.355 L 
0.355 L * (1 gal/3.785 L) = 0.0938 gallons

The equivalent km covered would be 

57miles/gal * 0.0938 gal * (1.61 km/ 1 mile) = 8.61 kilometers

I hope I was able to help you. Have a good day!
3 0
4 years ago
Two long, straight wires are parallel and 20 cm apart. One carries a current of 2.2 A, the other a current of 5.9 A. (a) If the
Leya [2.2K]

Answer: 1.298\times 10^{-5}\ N/m

Explanation:

Given

Current in the first wire I_1=2.2\ A

Current in the second wire I_2=5.9\ A

wires are 20\ cm apart

Force per unit length between the current-carrying wires is

\Rightarrow \dfrac{F}{l}=\dfrac{\mu_oI_1I_2}{2\pi r}

Force exerted  by the wires is the same

Put the values

\Rightarrow \frac{F}{l}=f=\dfrac{4\pi \times 10^{-7}\times 2.2\times 5.9}{2\pi \times 0.2}=1.298\times 10^{-5}\ N/m

This force will be repulsive in nature as the current is flowing opposite

4 0
3 years ago
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