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Ne4ueva [31]
2 years ago
15

QUESTION 4

Physics
1 answer:
Artyom0805 [142]2 years ago
6 0

Answer:

I think the answer might be the first one

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If it takes 15 minutes to dry your hair with a 1.200 kW hair drier, how much energy is used in drying your hair?
Elodia [21]
1.2 kW * 0.25 h = 0.300 kWh
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3 years ago
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calculate the distance a plane flies on a 7.95 hour flight from Chicago to London. Assume a constant speed of 800.0 km/h
soldier1979 [14.2K]

Answer:

6360 km

Explanation:

Use the kinematics equation x=v_ot+\frac{1}{2}at^2.  We are given t = 7.95 hours and a = 0 m/s^2 (constant speed means there is no acceleration).  Solve for x.

x=(800)(7.95)+\frac{1}{2}(0)(7.95^2)\\x=6360 \ km

4 0
3 years ago
This questions pls help
abruzzese [7]

Answer:

1. True

2. False

3. True

4. True

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2 years ago
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Who can help me for this question plz:(
Vanyuwa [196]
Force = mass x acceleration

15 = mass x 4

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8 0
3 years ago
An object with a mass of 78kg is lifted through a height of 6 meters. How much work is done?
g100num [7]
Work = force x distance. 

force = mass x acceleration 

work = mass x acceleration x diastance 

use acceleration of gravity in this problem 

W (J) = m (kg) x a (m/s/s) x d (m) 
W = 78 x 9.8 x 6 
W = 4586.4

3 0
3 years ago
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