3 years ago

30 POINTS

Physics

1 answer:

svetoff [14.1K]3 years ago

6 0

Answer:

8.6 is the answer trust me

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Any person for the job he applied Force moment or torque

VLD [36.1K]

Answer:

i think torque is the answer not confirmed

7 0

3 years ago

An airplane flies 40km directly south in 10 minutes and 20 km directly east in five minutes, its average speed is:

blondinia [14]

Average speed = total distance / total time
total distance = 40 + 20 = 60km
total time taken = 10 + 5 = 15 minutes
Average speed = 60/15 = 4km/min

8 0

3 years ago

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A total of 875 J of work was done when a force of 175 N was exerted on a box to move it. How far was the box moved

Vladimir [108]

Work = Force times Distance
W = Fd

Given W = 750J, F = 125N;

750 = 125d

Solving for d:
d = 750/125
d = 6

The box moved a distance of 6 meters.

3 0

2 years ago

25. Which of the following is true for an electromotor? A. It transforms thermal energy to electrical energy. B. It transforms m

Vlad1618 [11]

Answer:

Explanation:

it transforms electrical energy into mechanical energy.

4 0

3 years ago

Consider the following three statements: (i) For any electro-magnetic radiation, the product of the wavelength and the frequency

Scilla [17]

Answer:

A and B

Explanation:

The relation between frequency and wavelength is shown below as:

$c=frequency\times Wavelength$

c is the speed of light having value $3\times 10^8\ m/s$

Thus, the product of the wavelength and the frequency is constant and equal to $3\times 10^8\ m/s$

Option A is correct.

Given, Frequency = $1\times 10^{18}\ Hz$

Thus, Wavelength is:

$Wavelength=\frac{c}{Frequency}$

$Wavelength=\frac{3\times 10^8}{1\times 10^{18}}\ m$

$Wavelength=3\times 10^{-10}\ m$

Also, 1 m = $3\times 10^{-10}$ Å

So,

Wavelength = 3.0 Å

Option B is correct.

As stated above, the speed of electromagnetic radiation is constant. Hence, each radiation of the spectrum travels with same speed.

Option C is incorrect.

3 0

4 years ago

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