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4 years ago

How is pressure related to the sharpness of a knife and its ability to cut?

1 answer:

6 0

Pressure has inverse relationship with area of an object. The smaller the area is, more pressure it exerts. Increasing the sharpness of knife(decreasing its area), increases the pressure on an object i.e ability to cut increases on increasing the sharpness.
Hope this helps.

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A small car with a mass of 800kg moving with a velocity of 27.8 m/s. The car stops at a yellow light in 3.9 seconds. What force

raketka [301]

Answer:

F = 5702.56 N

Explanation:

Given that,

Mass of a small car, m = 800 kg

Initial speed of the car, u = 27.8 m/s

Final speed, v = 0

Time, t = 3.9 s

We need to find the force did it take for the car to stop.

The force acting on an object is given by :

$F=ma\\\\F=\dfrac{m(v-u)}{t}\\\\F=\dfrac{800\times (0-27.8)}{3.9}\\\\F=-5702.56\ N$

So, the magnitude of force acting on the car to stop is 5702.56 N.

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3 years ago

The process of arriving at a general conclusion based on the observation of specific examples is called ___________ reasoning.

olga55 [171]

The process of arriving at a general conclusion based on the observation of specific examples is called inductive reasoning. It is a logical process where multiple premises are combined to obtain a conclusion. It is <span>used in applications that involve prediction and forecasting.</span>

7 0

3 years ago

Substance of an atom of 2 or more elements

horrorfan [7]

H. O is the answer hope this helps
2

8 0

4 years ago

What would have the greatest gravitational pull on each other?

denpristay [2]

Answer:

Jupiter

Characteristics of a Dwarf Planet

One of Sir Isaac Newton's accomplishments established that the gravitational force between two bodies is proportional to their masses. All other things being equal, the planet with the strongest pull is the one with the largest mass, which is Jupiter.

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3 years ago

g Let the orbital radius of a planet be R and let the orbital period of the planet be T. What quantity is constant for all plane

Wittaler [7]

Explanation:

Kepler's third law gives the relationship between the orbital radius and the orbital period of the planet. Its mathematical form is given by :

$T^2=\dfrac{4\pi ^2}{GM}a^3$

Here,

G is gravitational constant

M is mass of sun

It means that the mass of Sun is constant for all planets orbiting the sun, assuming circular orbits.

7 0

3 years ago