There's not enough information to find an answer.
I think the idea here is that in descending (416 - 278) = 138 meters,
the glider gives up some gravitational potential energy, which
becomes kinetic energy at the lower altitude. This is all well and
good, but we can't calculate the difference in potential energy
without knowing the mass of the glider.
1). Wind more turns of wire in the coil around the core.
2). Increase the electrical current flowing in the wire.
(You can do that by using a battery or power supply with a little more voltage.)
3). If the core of the electromagnet is anything else but pure iron,
take it out, throw it away, and replace it with a core of pure iron.
Answer:
D
Explanation:
The answer is D because:
A) Only doctors are allowed to prescribe medications.
B) Rita is not a chef/cook.
C) Rita is not a personal trainer
D) The job of a dietican is to provide reccomendations to their clients in order for them to implement a healthy lifestyle via consuming what is best for them.
Hope this helps :)
Let's call
the mass of the star and
the mass of the planet, which should cancel. The gravitational force should equal the centripetal force:
We compute
This is Keppler's Law. We convert to MKS as we plug in and get
kg
which is about two and a half solar masses if I haven't made any errors.