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3 years ago

Sunlight travels 150,000,000 km from the sun to the earth because of?

Physics

1 answer:

padilas [110]3 years ago

8 0

The Speed of Light.
Photons emitted from the surface of the sun to travel across the vacuum of space to reach out eyes

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An engine takes in 200 J of heat, expels 40 J of heat, and does 160 J of work. What is the efficiency of the engine?

Reil [10]

The answer would be C. 80%
Put 160 over 200 and find the GCF
160/200÷40=4/5=80%

4 0

2 years ago

How does the use of renewable sources of energy help to solve the problem of energy

trasher [3.6K]

Answer:

The use of renewable sources of energy help to solve the problem of energy crisis is discussed below in details.

Explanation:

Environmental and economic advantages of adopting renewable energy incorporate: Creating energy that originates no greenhouse gas discharges from fossil fuels and decreases some kinds of air pollution. Increasing energy stocks and decreasing dependency on shipped fuels.

Here are 5 actionable suggestions you can follow to make a decent utilization of renewable energy on your bases:

Embrace Solar-Powered Technologies.
Crowdfund Clean Energy Projects.
Establish the Society of Concerned Scientists.

8 0

2 years ago

what is the resistance of a light bulb if a potential difference of 120 v will produce a current of 0.5 a in the bulb? 0.0042 0.

svlad2 [7]

R = V/I

R = 120 V/ 0.5 A

R = 240 ohms

3 0

2 years ago

Read 2 more answers

Two parallel conducting plates are separated by 9.2 cm, and one of them is taken to be at a potential of zero volts.What is the

True [87]

Answer:

$E=54V/cm$

$\Delta V=496.8V$ between the plates.

Explanation:

The equation for change of voltage between two points separated a distance d inside parallel conducting plates (<em>which have between them constant electric field</em>) is:

$\Delta V=Ed$

So to calculate our electric field strength we use the fact that the potential 8.8 cm from the zero volt plate is 475 V:

$E=\frac{\Delta V}{d}=\frac{475 V}{8.8cm}=54V/cm$

And we use the fact that the plates are 9.2cm apart to calculate the voltage between them:

$\Delta V=Ed=(54V/cm)(9.2cm)=496.8V$

8 0

2 years ago

A chair of weight 70.0 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F =

Annette [7]

Answer:

94.67 N

Explanation:

Consider a free body diagram with force, F of 41 N applied at an angle of 37 degrees while the weight acts downwards. Resolving the force into vertical and horizontal components, we obtain a free body diagram attached.

At equilibrium, normal reaction is equal to the sum of the weight and the vertical component of the force applied. Applying the condition of equilibrium along the vertical direction.

$\begin{array}{l}\\\Sigma {F_y} = 0\\\\N - W - F\sin \theta = 0\\\\N = W + F\sin \theta \\\end{array}$

Substituting 70 N for W, 41 N for F and $\theta$ for 37 degrees

N=70+41sin37=94.67441595 N and rounding off to 2 decimal places

N=94.67 N

6 0

3 years ago