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andreyandreev [35.5K]
3 years ago
8

Which of the following is NOT a likely result of regular physical activity?

Physics
1 answer:
bazaltina [42]3 years ago
8 0
Decreased attention span
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What is solar thermal energy used to do—heat homes or power homes?
cluponka [151]

Answer:

A

Explanation:

7 0
4 years ago
Electrical current is defined as
lbvjy [14]

The answer is B. It is measured in amperes.

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3 years ago
If the magnitude of the electric field at a distance of 7.8 cm from the center is 30500 n/c , what is the magnitude of the elect
Romashka-Z-Leto [24]
<span>3730 N/C The intensity of the electric field follows the inverse square law. Since everything except the distance is remaining constant, then the force will vary with the inverse square of the ratio of the change. So first, lets calculate the ratio of the change in distance. 22.3 / 7.8 = 2.858974359 And since we actually want the square of the distance... 2.858974359^2 = 8.173734385 And since the distance increased, that means the force will decrease. So we get 30500 / 8.173734385 = 3731.464538 Rounding to 3 significant figures gives 3730 N/C.</span>
4 0
4 years ago
An 888.0 kg elevator is moving downward with a velocity of 0.800 m/s. It decelerates uniformly and comes to a stop in a distance
bagirrra123 [75]

Answer:

The value of tension on the cable T = 1065.6 N

Explanation:

Mass = 888 kg

Initial velocity ( u )= 0.8 \frac{m}{sec}

Final velocity ( V ) = 0

Distance traveled before come to rest = 0.2667 m

Now use third law of motion V^{2} = u^{2} - 2 a s

Put all the values in above formula we get,

⇒ 0 = 0.8^{2} - 2 × a ×0.2667

⇒ a = 1.2 \frac{m}{sec^{2} }

This is the deceleration of the box.

Tension in the cable is given by T = F = m × a

Put all the values in above formula we get,

T = 888 × 1.2

T = 1065.6 N

This is the value of tension on the cable.

5 0
4 years ago
You see a flash of lightning and hear thunder 3 seconds later. If the air temperature is 24°C that day, determine how far away t
avanturin [10]

Answer:

Explanation:

speed of sound in 24 degrees celsius

345.48m/s

hence 345.48m/s x 3s = 1036.44m

4 0
3 years ago
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