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3 years ago

The weight of a girl on the Earth is 340 N, what is her mass on Earth?(g= 10Nkg-1)

Physics

1 answer:

kirill [66]3 years ago

4 0

Answer:

34 kg is the answer to the question

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3 years ago

In 2009, NASA's Messenger spacecraft became the second spacecraft to orbit the planet Mercury. The spacecraft orbited at a heigh

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Answer:

Explanation:

height, h = 125 miles = 125 x 1609 m = 201125 m = 0.2 x 10^6 m

Rdaius, R = 2.44 x 10^6 m

Mass, M = 3.3 x 10^23 kg

Let vo be the orbital speed.

The formula for the orbital speed is given by

$v_{o}=\sqrt{\frac{GM}{R+h}}$

where, M is the mass of mercury, R be the radius of mercury

$v_{o}=\sqrt{\frac{6.67\times10^{-11}\3.3\times 10^{23}}{2.64\times 10^{6}}$

vo = 2887.47 m/s

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3 years ago

According to the collision theory, all collisions do not lead to reaction. Which choice gives both reasons why not all collision

Maksim231197 [3]

Answer:

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reasons why not all collisions between reactant molecules lead to reaction

1.The total energy of two colliding molecules is less than some minimum amount of energy.

2. Molecules cannot react with each other unless a catalyst is present.

hence the correct option will be D that is 1 and 2.

8 0

4 years ago

A disk with a rotational inertia of 5.0 kg. m2 and a radius of 0.25 m rotates on a frictionless fixed axis perpendicu-

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Explanation:

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$5\times \alpha =8\times 0.25$

$\alpha =0.4 rad/s^2$

using

$\theta =\omega _0\times t+\frac{\alpha t^2}{2}$

$\pi =0+\frac{0.4t^2}{2}$

$2\pi =0.4t^2$

$t^2=5\pi$

$t=\sqrt{5\pi }$

$t=3.96 s$

$\omega =\omega _0+\alpha t$

$\omega =0+0.4\times 3.96$

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4 years ago

A 500-kg roller coaster car travels with some initial velocity along a track that is 5 m above the ground. The car goes down a s

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Answer:

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Explanation:

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3 years ago

The weight of a girl on the Earth is 340 N, what is her mass on Earth?(g= 10Nkg-1)​

The weight of a girl on the Earth is 340 N, what is her mass on Earth?(g= 10Nkg-1)