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lisov135 [29]
3 years ago
5

You are beautiful have a nice day <3​

Physics
2 answers:
GrogVix [38]3 years ago
8 0

Answer:

AWWW! Thanks! you as well!

Explanation:

Tresset [83]3 years ago
7 0

Answer:

I am?

Explanation:

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A heat engine does 9200 J of work per cycle while absorbing 22.0 kcal of heat from a hightemperature reservoir. What is the effi
Morgarella [4.7K]

Answer: 9.9%

Explanation: efficiency = (work output /work input) × 100

Note that, 1 kilocalorie = 4184 joules, hence 22kcal = 22× 4184 = 92048 joules.

Work output = 9200 j and work input = 92048 j

Efficiency = (9200/92048) × 100 = 0.099 × 100 = 9.9%

4 0
4 years ago
How would be best to find a scientific law? A) Generalized rule to explain a body of observations.
lord [1]

Answer:

In general, a scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory

5 0
3 years ago
A solenoid with 465 turns has a length of 8.00 cm and a cross-sectional area of 3.10 ✕ 10−9 m2. Find the solenoid's inductance a
hoa [83]

The solenoid's inductance and the average emf around the solenoid if the current changes from +3.50 A to −3.50 A in 7.83 ✕ 10−3 s will be 1.01 ×10⁻⁸ H and 9.02 × 10⁻² V.

<h3>What is a solenoid?</h3>

A coil of wire that carries an electric current is a solenoid. A solenoid is an electromagnet formed by a helical coil of wire.

Which generates a magnetic field when an electric current is passed through the coil.

A solenoid is a form of coil that produces a magnetic field when the electric current is passed through it. A solenoid is created when a conductive wire is used to make a loop.

Given data;

Turns ,N = 465

Length,L= 8.00 cm

Cross-sectional area,A = 3.10 ✕ 10−9 m2.

Solenoid's inductance, L=?

The average emf around the solenoid, E=?

Time of flow,t= 7.83 ✕ 10−3 s

Current changes from +3.50 A to −3.50 A

The inductance of the solenoid is found as;

\rm L =  \frac{\mu_0 AN^2}{L} \\\\ \rm L =  \frac{4 \times \pi \times 10^{-7}\times 3.0 \times 10^{-9} \times (465)^2 }{8.00 \times 10^{-2}} \\\\ L= 1.01 \times 10^{-8} \ H

The average emf around the solenoid is found as;

\rm e = L \frac{I_2-I_1}{t} \\\\ \rm e = 1.01 \times 10^{-8}  \times \frac{3.50-(-3.50)}{7.83 \times 10^{-3}} \\\\ e =9.02 \times 10^{-12} \  V

Hence, the solenoid's inductance will be 1.01× 10⁻⁸ H.

To learn more about the solenoid refer;

brainly.com/question/16015159

#SPJ1

3 0
2 years ago
Two children are pulling and pushing a 30.0 kg sled. The child pulling the sled is exerting a force of 12.0 N at a 45o angle. Th
raketka [301]
In order to calculate the weight, we may simply use:
W = mg
W = 30 * 9.81
W = 294.3 N

The sum of the reaction force and the upward component of child pulling will be equal to total downward force. The force acting downwards is the weight. Therefore:
R + 12sin(45) = 294.3
R = 285.82 N

The acceleration can be found using the resultant force and the mass of the sled. The resultant force is:
F(r) = pulling force + pushing force - friction
F(r) = 12cos(45) + 8 - 5
F(r) = 11.48 N
a = F/m
a = 11.48 / 30
a = 0.38 m/s²
4 0
3 years ago
Read 2 more answers
The radius of an atom is closest in size to a
ioda

the radius of the entire atom was 0.00000001 cm.

8 0
4 years ago
Read 2 more answers
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