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olga55 [171]
4 years ago
10

How does the theory of plate tectonics support the theory of seafood spreading?

Physics
1 answer:
Zanzabum4 years ago
3 0

When two tectonic plates move in opposite directions, it causes magma to rise, creating a new seafloor.

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Bill and Nageen have each built an electric motor and they are testing them by having them lift boxes. Bill's motor lifts a box
mariarad [96]

Answer:

Bill's motor

Explanation:

Bill's motor lifts a box 0.39 metres in 2 seconds.

Nageen's motor lifts the same box 0.35 metres in 2 seconds.

Power = Work done/time

or

P=\dfrac{mg\times h}{t}

Power of bill's motor,

P_1=\dfrac{m\times 9.8\times 0.39}{2}\\\\P_1=1.91m\ Watts

Power of Nageen's motor,

P_2=\dfrac{m\times 9.8\times 0.35}{2}\\\\P_2=1.71m\ Watts

So, Bill's motor applied more power to the box.

5 0
3 years ago
Calculate the force it would take to accelerate a 250 kg motorcycle at a rate of 5m/s^2
bija089 [108]

1250 N of force is required to accelerate a 250 kg motorcycle at a rate of 5 m/s^{2}.

<u>Explanation:</u>

As per the second law of motion stated by Newton, the net unbalanced external force acting on any object is directly proportional to the product of mass and acceleration experienced by the object.

As here the object is given as motorcycle of mass 250 kg. Also the acceleration exhibited by the motorcycle is stated as 5 m/s^{2}. So from the Newton's second law of motion,

Net force = Mass of the motorcycle× Acceleration of the motorcycle

Net force = 250 × 5 = 1250 N.

Thus, 1250 N of force is required to accelerate a 250 kg motorcycle at a rate of 5 m/s^{2}.

5 0
3 years ago
HELP ASAP How are the bars in barred spiral galaxies thought to have formed?
sergey [27]

Answer:

D. slow evolution

Explanation:

8 0
3 years ago
Hi guys . I'm having some troubles with physics and chemistry .
Otrada [13]

Answer:

physics and math tutor

Save my exams

Explanation:

hii! for PTM(physics and math tutor) you simply type in the search bar for example in. physics Units and measurements past papers.Then the first option would be PTM(physics and math tutor) and you click on it and it would give you on the left side Revision Notes, flashcards and practice questions. This site has helped me so much and I hope this helps you too (by the way PTM has for all 3 sciences and math too) just simply type the lesson name along with past paper and click on the first link and you'll get yourself your answers!!!! hopefully this helps!:))

6 0
3 years ago
please write the definition of instantaneous speed, velocity and acceleration and solve problems on them please show workings​
Katyanochek1 [597]

Answer:

instantaneous speed: The instantaneous speed is the speed of an object at a particular moment in time. And if you include the direction with that speed, you get the instantaneous velocity. In other words, eight meters per second to the right was the instantaneously velocity of this person at that particular moment in time.

velocity: the speed of something in a given direction.

acceleration: a vehicle's capacity to gain speed within a short time.

solve problems: Problem solving consists of using generic or ad hoc methods in an orderly manner to find solutions to problems.

Explanation:

7 0
3 years ago
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