How long have advances in astronomy been occurring? Only for the past few years

Physics

1 answer:

solniwko [45]4 years ago

3 0

I'd have to say that the list of choices doesn't go far enough.

Advances in Astronomy have been occurring for at least the past two millennia (2000 years). Maybe longer.

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Daniel earned $8.00 per hour at his job. Daniel works 35 hours week. He received a 5% pay increase. How much more money will Dan

polet [3.4K]

Daniel will earn $2.20 more a week because his pay increase will increase his pay from $8 to $8.40

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3 years ago

Describe a situation when you might travel a high velocity but with low acceleration

Umnica [9.8K]

Answer:
One situation could be when someone is sitting in a car that is travelling at a constant speed of 150mph

Explanation:
Let’s review the terms:
Velocity: the speed of something in a given direction
Acceleration: increase in the rate or speed of something

The car is travelling at a high speed but the speed is constant, so it isn’t increasing. In other words, the car the person is sitting in is travelling in in a high velocity but with no/low acceleration.

I hope this helps! Please comment if you have any questions.

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4 years ago

Consider a motor that exerts a constant torque of 25.0 nâ‹…m to a horizontal platform whose moment of inertia is 50.0 kgâ‹…m2. A

Crazy boy [7]

Answer:

W = 1884J

Explanation:

This question is incomplete. The original question was:

<em>Consider a motor that exerts a constant torque of 25.0 N.m to a horizontal platform whose moment of inertia is 50.0kg.m^2 . Assume that the platform is initially at rest and the torque is applied for 12.0rotations . Neglect friction. </em>

<em> How much work W does the motor do on the platform during this process? Enter your answer in joules to four significant figures.</em>

The amount of work done by the motor is given by:

$W=\Delta K$