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Mkey [24]
3 years ago
14

A star that appears to pulsate is called a

Physics
1 answer:
Kay [80]3 years ago
8 0
A star that appears to pulsate is called a Variable Star.
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sonic is sliding down a frictionless 15m tall hill. He starts at the top with a velocity of 10m/s. At the bottom of the hill he
podryga [215]

Answer:

The maximum speed of sonic at the bottom of the hill is equal to 19.85m/s and the spring constant of the spring is equal to (497.4xmass of sonic) N/m

Energy approach has been used to sole the problem.

The points of interest for the analysis of the problem are point 1 the top of the hill and point 2 the bottom of the hill just before hitting the spring

The maximum velocity of sonic is independent of the his mass or the geometry. It is only depends on the vertical distance involved

Explanation:

The step by step solution to the problem can be found in the attachment below. The principle of energy conservation has been applied to solve the problem. This means that if energy disappears in one form it will appear in another.

As in this problem, the potential and kinetic energy at the top of the hill were converted to only kinetic energy at the bottom of the hill. This kinetic energy too got converted into elastic potential energy .

x = compression of the spring = 0.89

5 0
3 years ago
A roller coaster is hard to stop because it has a lot of inertia. Infer using newtons first law
olchik [2.2K]
Lol i think i had the same worksheet!! lol anyway look up newtons first law and it will be pretty self explanatory from there
4 0
4 years ago
2.
Afina-wow [57]

Answer:

2.76×10⁻¹⁰ C

Explanation:

Applying,

V = W/q................... Equation 1

Where V = Electric Potential, E = Electric potential energy, q = charge.

make q the subject of the equation

q = W/V................ Equation 2

From the question,

Given: W = 4.26×10⁻⁸ J, V = 154.5 V

Substitute these values into equation 2

q = 4.26×10⁻⁸/154.5

q = 2.76×10⁻¹⁰ C

3 0
3 years ago
A pump of power 1500W is used for 5 mins the energy supplied by the pump is​
Anika [276]

Answer:

300W

Explanation:

from my years in middle school, i have learned the equation is energy =power*time is 300W

7 0
4 years ago
What is the resulting velocity of the launcher if the net force on the launcher is equal to the reaction force?
xz_007 [3.2K]

Answer:

according to this question best answer is C

5 0
3 years ago
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