3 years ago

Why do scientists believe that dark matter exists even though it cannot be seen?

Physics

1 answer:

poizon [28]3 years ago

3 0

Because although they cannot see it, they can see it's influence on objects that can be seen, and it's effects.

You might be interested in

Yo help please i’ll give u a brainliest

Allisa [31]

Couldn’t really read or see the problem clearly, but from what I think I saw I would say B

7 0

3 years ago

Does anyone know the answers to these ?

Mazyrski [523]

6 degrees
4N
.....................

5 0

3 years ago

The velocity of any object depends upon

const2013 [10]

The displacement, time, and direction

5 0

3 years ago

Read 2 more answers

A sinusoidal wave travels along a stretched string. A particle on the string has a maximum speed of 2.0 m/s and a maximum accele

JulsSmile [24]

Answer:

The amplitude of the wave is 0.02 m.

Explanation:

Given that,

Maximum speed = 2.0 m/s

Maximum acceleration = 200 m/s²

We need to calculate the angular frequency

Using formula of angular frequency

$\omega=\dfrac{a_{max}}{v_{max}}$

Put the value into the formula

$\omega=\dfrac{200}{2.0}$

$\omega=100\ rad/s$

We need to calculate the amplitude of the wave

Using formula of velocity

$v_{max}=A\omega$

$A=\dfrac{v_{max}}{\omega}$

Put the value into the formula

$A=\dfrac{2.0}{100}$

$A=0.02\ m$

Hence, The amplitude of the wave is 0.02 m.

8 0

4 years ago

This mathematical model describes the changes that occur in a sample of water as its temperature increases. Based on this model,

Sergio039 [100]

Answer:A. I expect the molecules in ice to move more quickly than the molecules in water vapor.

Explanation:

7 0

3 years ago

Read 2 more answers