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ad-work [718]
3 years ago
15

All heat engines involve _____. the refrigeration cycle evaporation and condensation combustion

Physics
2 answers:
AURORKA [14]3 years ago
7 0
The answer is Combustion took the test and made a 93
pishuonlain [190]3 years ago
4 0
Combustion is the answer i just took the test
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Convert 3.5 km/hr to m/s
Nastasia [14]

Answer:

0.972222........

Explanation:

1. Convert km/h to m/h by multiplying by 1000

2. Divide by 60 so that you have 58.3333... meters per minute

3. Divide by 60 again so now you have 0.972222... m/s

8 0
4 years ago
Read 2 more answers
A chair of weight 125 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 3
iris [78.8K]

Answer:

N = 148.10N

Explanation:

GIVEN

Weight =125 N

force = 35

angle =42°

since there is no vertical acceleration a_{y} = 0 from

free body diagram

\Sigma fa_{y} = ma_{y} = 0

N-W-Fsin42\degree = 0\\\\N= W+Fsin42\\N = 125+35\times 0.66\\N = 148.10 N

5 0
4 years ago
the wattage ratting of a light bulb is the power it sonsumers when it is connected accross a 120 V potential difference what is
igor_vitrenko [27]

Answer:

240 Ω

Explanation:

Resistance: This can be defined as the opposition to the flow of current in an electric field. The S.I unit of resistance is ohms (Ω).

The expression for resistance power and voltage is give as,

P = V²/R.......................... Equation 1

Where P = Power, V = Voltage, R = Resistance

Making R the subject of the equation,

R = V²/P.................... Equation 2

Given: V = 120 V, P = 60 W.

Substitute into equation 2

R = 120²/60

R = 240 Ω

Hence the resistance of the bulb = 240 Ω

8 0
4 years ago
How can non visible radiation be used
DanielleElmas [232]
Here are some popular applications of
non-visible electromagnetic radiation:

-- listen to the weather and music on the radio
-- watch a football game on TV
-- change the TV channel from the couch, using the 'remote'
-- make toast
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-- make a call with your cellphone
-- text a friend with your 'smartphone'
-- surf the internet in your house without wires (with WiFi in the house)
-- use GPS in the car
-- get a new set of dental X-rays made
-- spend 30 minutes in a tanning bed
-- look at your friend's face




3 0
4 years ago
Read 2 more answers
If the radio waves transmitted by a radio station have a frequency of 76.5 mhz, what is the wavelength of the waves, in meters?
____ [38]
Given: Velocity of light    c = 3.00 x 10⁸ m/s

Frequency f = 7.65 x 10⁷/s

Required: Wavelength λ = ?

Formula:  λ = c/f

λ = 3.00 x 10⁸ m/s/7.65 x 10⁷/s

λ = 3.92 m
3 0
3 years ago
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