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3 years ago

CAN SOMEONE HELP ME

Physics

1 answer:

Mashcka [7]3 years ago

7 0

Explanation:

1) CHEMICAL energy from gas, oil, or coal provides

2) HEAT energy to water to produce steam. A turbine changes the energy of the steam into the

3) MECHANICAL energy of the rotating turbine and generator. The generator converts the energy into

4) ELECTRIC energy. The lamp is an energy converter changing,

5) ELECTRIC energy to

6) LIGHT energy and

7) HEAT energy

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Write forty million in scientific notation.

Ivanshal [37]

Answer: 4 x 106

That’s how you write forty million in scientific notation.

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3 years ago

Read 2 more answers

How does the force of gravity affect the rate of acceleration?

Vesnalui [34]

Gravity lets all objects fall to the ground at the same speed, 9.8 m/s/s. If the force of gravity were stronger, such as 10 m/s/s, the rate of acceleration would be faster.

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3 years ago

A horizontal object-spring system oscillates with an amplitude of 2.8 cm. If the spring constant is 275 N/m and object has a mas

Lisa [10]

Answer:

(a) the mechanical energy of the system, U = 0.1078 J

(b) the maximum speed of the object, Vmax = 0.657 m/s

Explanation:

Given;

Amplitude of the spring, A = 2.8 cm = 0.028 m

Spring constant, K = 275 N/m

Mass of object, m = 0.5 kg

(a) the mechanical energy of the system

This is the potential energy of the system, U = ¹/₂KA²

U = ¹/₂ (275)(0.028)²

U = 0.1078 J

(b) the maximum speed of the object

$V_{max} =\omega*A= \sqrt{\frac{K}{M} } *A\\\\V_{max} = \sqrt{\frac{275}{0.5} } *0.028\\\\V_{max} = 0.657 \ m/s$

$a_{max} = \frac{KA}{M} \\\\a_{max} = \frac{275*0.028}{0.5}\\\\a_{max} = 15.4 \ m/s^2$

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3 years ago

A moving roller coaster speeds up with constant acceleration for 2.3\,\text{s}2.3s2, point, 3, start text, s, end text until it

Ad libitum [116K]

Answer:

Δx=(v+v0/2)t

Explanation:

We can figure out which kinematic formula to use by choosing the formula that includes the known variables, plus the target unknown.

In this problem, the target unknown is the initial velocity v_0v

v, start subscript, 0, end subscript of the roller coaster.

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3 years ago

What properties of sound determine the volume of sound? Is this affected by the motion of the sound source?

Alik [6]

The amplitude determines the volume of the sound. This isn't affected by the motion of the sound source.
Hope this helps

6 0

3 years ago

CAN SOMEONE HELP ME​

CAN SOMEONE HELP ME