A radioactive substance is decaying exponentially. if there are initially 15 grams of the substance and after 120 minutes there are 4 grams, what is the half-life in minutes of the substance?

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It is proposed that future space stations create an artificial gravity by rotating. Suppose a space station is constructed as a 1600-m-diameter cylinder that rotates about its axis. The inside surface is the deck of the space station. What rotation period will provide "normal"gravity?

An increase in which quantity will result in an increase in momentum?

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Momentum = (mass) x (velocity)

(Remember that momentum is a vector ... it has a direction.
Its direction is the same as the velocity.)

An increase in either mass or velocity will increase the momentum.

It's pretty hard to increase the mass of a moving object, so I think
the better answer is velocity .

In a video game, a flying coconut moves at a constant velocity of 20 meters/second in the positive direction. The coconut hits an obstacle and moves in the opposite direction with a constant velocity of 10 meters/second. What’s the change in velocity of the coconut?

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Answer:

30 negative is the change in velocty

Explanation:

Answer:-30 m/s

Explanation:

Which term refers to the phenomenon of light shining on a metal and causing electrons to break free from their atoms?A. Blackbody radiation

B.Ultraviolet catastrophe

C. Emission spectra

D. Photoelectric effect

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D. Photoelectric Effect

Photoelectric effect.

In terms of density and humidity, which conditions characterize a high-pressure area? A.high density, high humidity

B.high density, low humidity

C.low density, low humidity

D.low density, high humidity

Answers

Answer
A
Source: Meteorologist/Storms spotter & chaser

Answer:

A (high density and high humidity)

Explanation: Hope this helps :)

An element's atomic number is 93. how many protons would an atom of this element have? ???? protons

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Neptunium. Atomic mass 237. 93 protons.

For a satellite to stay in orbit around Earth, it has to be moving forward very fast all the time. What force will make it fall to Earth if it goes too slowly?Earth's gravity

the force of friction

the magnetic force from Earth's north pole

the Sun's gravity

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Maintaining an orbit has nothing to do with the satellite's speed.
ANY (tangential) speed is enough to stay in orbit, if the satellite
just stays away from Earth's atmosphere.

If the satellite completely stops moving 'sideways' at all, and just
hangs there, then the forces of gravity between the satellite and
the Earth will pull them together ... the satellite will fall into the
atmosphere and then to the ground.

Most important
Centripetal force which makes it attract towards the earth and makes it able to move around

Other Questions

A football is kicked into the air with a velocity of 32m/s at an angle of 25º. At the very top of the ball’s path, its vertical velocity is

View the image below and answer the question.The illustration above is an example of which of Newton's Laws?aUniversal Law of GravitationbNewton's Second LawcNewton's First LawdNewton's Third Law

How is the frequency of an electromagnetic wave related to energy?A) As the frequency of the wave decreases, its energy increases. B) As the frequency of the wave fluctuates, its energy decreases. C) As the frequency of the wave increases, its energy also increases. D) As the frequency of the wave changes, its energy remains constant.

How does inertia affect a person who is not wearing a seatbelt during a collision?