Answer:
the correct answers B
It needs to be moving horizontally at a high speed, in order for the satellite to stay in orbit once it's released from the rocket.
Explanation:
In this exercise, let's look for the solution to the problem before reviewing the statements to find out which one is correct.
When the satellite is in orbit it must comply with Newton's law
F = m a
the force of the universal attractive force and the acceleration is centripetal
a = v² / r
we substitute
- G m M /r² = -m v² / r
v² = G M / r
v =
When analyzing this expression, the satellite is in a stable orbit because its centripetal acceleration creates a change in the direction of the velocity in such a way that it remains in an orbit
when reviewing the correct answers B
Earth's rotation produces two high tides . This occurs because the moon revolves around the Earth in the same direction that the Earth rotates around its axis. ... Because the Earth rotates through two tidal “bulges” every lunar day, coastal areas experience two high and two low tides every 24 hours and 50 minutes. High tides occur 12 hours and 25 minutes apart.
Answer:
0.133 A
Explanation:
Given:
The voltage difference is,
The resistance of the circuit is,
Now, as per Ohm's Law, the potential difference across two points in a circuit is directly proportional to the current supplied in the circuit. The constant of proportionality is the resistance of the circuit.
Hence, the mathematical statement of Ohm's law is given as:
Where is the current in the circuit.
Now, plug in 16 for 'V' and 120 for 'R' and solve for 'I'. This gives,
Therefore, the current in the circuit is 0.133 amperes.
Answer:
Explanation:
Check attachment for solution
Final velocity is equal to initial plus acceleration multiplied by time
Vf = Vi + at
Vf = (15m/s) + (5m/s^2)(5s)
Vf = 15m/s + 25m/s
Vf = 40m/s
This is straight from the kinematic equations. If you can’t solve a simple problem like this, I suggest tryin to study it a bit more. You’re gonna have trouble if you can’t dissect a word problem