4 years ago

The stars in a constellation are physically close to one another.

1 answer:

5 0

Answer: False. The stars in a constellation are not physically close to one another.

Explanation: A star in constellation, are pattern of stars in the night sky. For many constellations, the stars are not near each other. They just happen to appear near each other in our sky.

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LPG is a better domestic fuel than wood?

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it is because it do not produce smoke like fuel from wood.

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What do velocity and acceleration have in common?

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Acceleration is the change in velocity

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The electric power consumed by a circuit with one light bulb is 24 W. The voltage of the battery is 3 V. What is the current in

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Using at least 3 to 4 complete content related sentences describe the first and second postulate of special relativity.

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4 years ago

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A 3.0 kg object is loaded into a toy spring gun, and the spring has a spring constant 750N/m. The object compresses the spring b

kiruha [24]

Answer:

Explanation:

mass of object, m = 3 kg

spring constant, K = 750 n/m

compression, x = 8 cm = 0.08 m

angle of gun, θ = 30°

(a) As the ball is launched, it has some velocity due to the compression in the spring, so it has some kinetic energy.

(b) Let v be th evelocity of ball at the tim eof launch.

by using the conservation of energy

1/2 Kx² = 1/2 mv²

750 x 0.08 x 0.08 = 3 x v²

v = 1.265 m/s

By use of the formula of maximum height

$h = \frac{v^{2}Sin^{2}\theta}{2g}$

$h = \frac{1.265^{2}Sin^{2}30}{2\times 9.8}$

h = 0.02 m

h = 2 cm

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3 years ago