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2 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Physics

2 answers:

natita [175]2 years ago

4 0

Kinetic energy. Kinetic energy describes the energy an object possesses due to its motion by 1/2mv^2.

Solnce55 [7]2 years ago

3 0

I think the correct answer is D: Potential Energy.

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What creates an electric force field that moves electrons through a circuit

Sever21 [200]

I believe the correct answer would be "A" energy source.

4 0

2 years ago

CAN SOMEONE PLEASE HELP ME ASAP PLEASE !!!!!

attashe74 [19]

Answer:

A gas that exerts a pressure of 14 bar in a container with a volume of 312 mL will exert a pressure of 6.7 bar when transferred to a container with a volume of 652 mL.

Explanation:

6 0

3 years ago

A heat engine has three quarters the thermal efficiency of a carnot engine operating between temperatures of 65Â°C and 435Â°C if

const2013 [10]

Answer:

The value is $P_e = 31275.2 \ W$

Explanation:

From the question we are told that

The efficiency of the carnot engine is $\eta$

The efficiency of a heat engine is $k = \frac{3}{4} * \eta$

The operating temperatures of the carnot engine is $T_1 = 65 ^oC =338 \ K$ to $T_2 = 435 ^oC = 708 \ K$

The rate at which the heat engine absorbs energy is $P = 44.0 kW = 44.0 *10^{3} \ W$

Generally the efficiency of the carnot engine is mathematically represented as

$\eta = [ 1 - \frac{T_1 }{T_2} ]$

=> $\eta = [ \frac{T_2 - T_1}{T_2} ]$

=> $\eta = 0.3856$

Generally the efficiency of the heat engine is

$k = \frac{3}{4} * 0.3856$

=> $k = 0.2892$

Generally the efficiency of the heat engine is also mathematically represented as

$k = \frac{W}{P}$

Here W is the work done which is mathematically represented as

$W = P - P_e$

Here $P_e$ is the heat exhausted

$k = \frac{P - P_e}{P}$

=> $0.2892 = \frac{44*10^{3} - P_e}{44*10^{3}}$

=> $P_e = 31275.2 \ W$

8 0

2 years ago

Violet light has a frequency of 7.26 × 1014 Hz and travels at a speed of 3.00 × 108 m/s.

Anuta_ua [19.1K]

Answer:

what's the question

........

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2 years ago

Why does a comet's tail point away from the Sun? 1Choice 1 The solar wind blows the tail away from the Sun. 2 It is being pulled

AnnyKZ [126]

Choice 1

The Sun's radiation and solar wind cause the dust and gas around the comet (coma) to stretch the coma. The solar wind electromagnetically blows the ions in the coma away.

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3 years ago