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4 years ago

Renewable energy has no disadvantages. True or False

Physics

2 answers:

Ivahew [28]4 years ago

8 0

Answer:

TRUE:

Explanation:

they are normally more expensive to set up/ build or buy.

levacccp [35]4 years ago

3 0

Answer: False, having renewable energy gives you the able to keep using it rather than a nonrenewable.

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When operated on a household 110.0-V line, typical hair dryers draw about 1650 W of power. We can model the current as a long st

defon

Answer:

Current in the hair dryer will be equal to 15 A

Explanation:

We have given that household is operated at 110 volt

So potential difference V =110 volt

Power drawn by hairdryer is P = 1650 watt

We have to find the current in the hair dryer

We know that power is given as P = VI, here V is potential difference and I is current

So $1650=110\times I$

I = 15 A

So current in the hair dryer will be equal to 15 A

4 0

4 years ago

______ is the ability to cause changes in matter.

My name is Ann [436]

Answer:

Explanation:

Energy is defined as the ability to cause changes in matter. The energy of moving matter is called kinetic energy.

3 0

3 years ago

Can you predict the speed of a car as it moves down the track?

Elan Coil [88]

Answer I will say no

Explanation:

3 0

3 years ago

Read 2 more answers

a student compared two samples of matter. he recorded the results in the chart. Sample A: Appearance: shiny and yellow. Sample B

Vladimir [108]

Answer:

The answer are B

Explanation:the two samples haves yellow color :)

6 0

3 years ago

Read 2 more answers

A 0.017-kg acorn falls from a position in an oak tree that is 18.5 meters above the ground.

Genrish500 [490]

Answer:

Velocity= 19.05 m/s

Kinetic energy= 3.08 J

Explanation:

The corn possess potential energy. Feom law of conservation of energy, all the potential eneegy will be converted to kinetic energy, with negligible friction.

Potential energy, PE= kinetic energy, KE

Potential energy is given by mgh while kinetic energy is given by $0.5mv^{2}$

Equating

$mgh=0.5mv^{2}$

Making v the subject of the formula then

$v=\sqrt {2gh}$

Substituting 9.81 m/s2 for g and 18.5 m for h then the velocity will be

$v=\sqrt {2\times 9.81\times 18.5}=19.0517715711689\ m/s\\v\approx 19.05\ m/s$

To get the kinetic eneegy, since PE=KE AND KE is

$KE=0.5mv^{2}$

Substituting v with 19.05 and m with 0.017 kg we have

$0.5\times 0.017\times 19.05^{2}=3.08467125/ J\approx 3.08 J$

This can also be achieved by mgh since PE=KE hence 0.17*9.81*18.5=3.085245 J and the results are slightly different due to small energy losses and rounding off of values.

7 0

3 years ago