PHYSICS HIGH SCHOOL

Dense substances sinking into Earth's core heated Earth's interior through _________.A. friction
B. volcanism
C. radioactive decay
D. mantle convection

Answers

Answer 1
Answer: Dense substances sink into the earth's core heated earth's interior through friction. Hope this helped!

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Which equation is used to calculate the amount of electrical energy used?a) E = t ÷ P

b) E = t – P

c) E = P + t

d) E = P × t

Answers

Answer:

The equation of amount of electrical energy used E = P* t.

d is correct option.

Explanation:

Electrical energy :

The electrical energy is the chemical energy which is consumed in the electric circuit.

Power :

Electric power is the rate at which energy is transferred from one part to another part of electric circuit.

The amount of electric energy is defined as,

The amount of electrical energy is the product of the power and time.

E = P* t

Where, E = energy transferred

P = Power

t = time

Hence, The equation of amount of electrical energy is used E = P* t.
d
cause E=U and in power formula is p=U÷t or E÷t so E=p×t

The age of the universe is thought to be about 14 billion years. Assuming two significant figures, write this in powers of ten in years

Answers

14x10^9 remember to hit that thanks button and rate 5 stars please!!!!

A person walks out of a store with a pillow at the top of an overflowing shopping cart. While walking to the car, the cart's wheel hits a large rock, causing the cart to suddenly stop. Which of the following is likely to happen as a result of Newton's first law of motion?

Answers

The pillow will continue to go forward as Newton's first law states that an object will continue in it's path unless another force acts upon it

Contrast generators and electric motors.

Answers

Answer:

A generator produces electricity when a conducting wire is rotated between magnetic field. Mechanical energy is converted to electrical energy. Fleming's right hand rule is used.

An electric motor does mechanical work using electrical energy. A current carrying coil is placed in magnetic field. A torque is exerted on the coil and it rotates. Electrical energy is converted to mechanical energy. Fleming's left hand rule is used.
generators take mechanical and output energy. electric motors take the input of electricity. 

A 2.50 × 105 W motor is used for 26.4 s to pull a boat straight toward shore. How far does the boat move toward shore if a force of 4.20 × 104 N is applied by the motor?

Answers

The power of the motor is
2.50x10⁵ W
or 
2.50x10⁵ N m/s

The time it takes to pull the boat is
26.4 s

The force applied is
4.20x10⁴ N

The distance traveled by the boat is
2.50x10⁵ N m /s (26.4 s) / (4.20x10⁴ N)
 = 157.14 m

Answer:

157 m

Explanation:

right on ed2020

A solid geometric shape formed by a mineral is called

Answers

When a mineral is formed into a geomoetric shaped it is called a crystal

Answer:

Crystal.

Explanation:
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