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lisabon 2012 [21]

3 years ago

6

In an inelastic collision involving an isolated system, the final total momentum isA) more than the initial momentum.B) exactly

the same as the initial momentum.C) less than the initial momentum.

1 answer:

damaskus [11]3 years ago

5 0

I think that the answer is C

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In order to change the color of light, you must change___?

Bogdan [553]

In order to change the colour of the light, you would need to change both the wavelength and frequency of light, as light in the visible spectrum, have their own unique wavelengths that they occur in along with the measure of frequency, which measures the number of cycles or turns a wave can occur from trough to trough or crest to crest within a given period of time.

6 0

4 years ago

SOMEONE HELP PLEASE!!!!(15POINTS)

Bezzdna [24]

Answer: Friction

Explanation:

Friction is a force that opposes the motion of an object on another surface. For example, when a box is pushed along the floor, the floor exerts a frictional force on the box, "resisting" the motion of the box. This force is due to the contact between the molecules of the box and the molecules of the floor, and it is always directed against the direction of motion of the object (so, if the object is moving forward, friction acts backwards).

The magnitude of the friction force is given by:

$F=\mu N$

where $\mu$ is the coefficient friction, which is a number that depends on the materials of the two surfaces, and N is the normal reaction.

7 0

3 years ago

Read 2 more answers

Calculate the approximate force on a square meter (1.00 m3) of sail, given the horizontal velocity of the wind is 6.00 m/s paral

KiRa [710]

Answer:

The force exerted on square meter of cubic sail is F = 15.3 N

Explanation:

Given:-

- The face area of cubic sail, A = 1 m^2

- The velocity at frontal face, v1 = 6.0 m/s

- The velocity at back face, v2 = 3.5 m/s

- The density of air. ρ = 1.29 kg/m^3

Find:-

Calculate the approximate force on a square meter (1.00 m3) of sail

Solution:-

- We will apply the Bernoulli's equation to the flow of air around the cubic sail. Assuming that elevation changes are negligible. The constant elevation Bernoulli's equation is:

P1 + ρ*v1^2 / 2 = P2 + ρ*v2^2 / 2

- The force (F) applied by any fluid is given by:

F = ( P2 - P1 )*A

- Re-arranging bernoulli's expression:

P2 - P1 = ρ/ 2 [ v2^2 - v1^2 ]

- Multiple the equation by area A:

A*[P2 - P1] = A*ρ/ 2 [ v1^2 - v2^2 ]

F = A*ρ/ 2 [ v1^2 - v2^2 ]

- Plug in the values:

F = (1)*(1.29/2)*[ 6^2 - 3.5^2 ]

F = 15.3 N

7 0

4 years ago

When we increase the exponent 10 to 10 we must

marysya [2.9K]

Answer:

If you say it like this (x^10)^10, then it would be x^100.

7 0

3 years ago

a disk of a radius 50 cm rotates at a constant rate of 100 rpm. what distance in meters will a point on the outside rim travel d

vlabodo [156]

Answer: 50π m ≈ 157 m

Explanation:

100 rev/min (2π rad/rev) / (60 sec/min) = 3⅓π rad/s

d = ωrt = 3⅓π(0.50)(30) = 50π m ≈ 157 m

8 0

3 years ago