All categories

3 years ago

Which statements describe the wave? Check all that

Physics

1 answer:

Olin [163]3 years ago

4 0

Answer:the wave is an electromagnetic wave.

Explanation:

You might be interested in

This type of reaction is most like breaking a rack of balls at the start of a game of pool:

Svet_ta [14]

The answer is b fission hope this helps

5 0

4 years ago

A 70kg car drives through a curve with radius 50m. What is the minimum angle the road should be tilted to keep the car on the ro

worty [1.4K]

when car moves along a circular path then centripetal force for taking turn will be provided by the component of normal force

Let the road is tilted by some angle

so force equations are given as

$F_n cos\theta = mg$

$F_n sin\theta = \frac{mv^2}{R}$

now divide two equations

$tan\theta = \frac{v^2}{Rg}$

now as it is given to us that

$v = 80 km/h$

$v = 80* \frac{5}{18} = 22.2 m/s$

$R = 50 m$

now we have

$tan\theta = \frac{22.2^2}{50*9.8}$

$tan\theta = 1$

$\theta = tan^{-1}1$

$\theta = 45^0$

so it is inclined at an angle of 45 degree

8 0

3 years ago

1. What happens to particle spacing when temperature increase, What we call this process?

enot [183]

Answer:

Particle spacing increases and it's called evaporating

5 0

4 years ago

Why is reaching activation energy necessary? Reactants require a minimum amount of energy to start to break a chemical bond. Pro

Ksju [112]

Answer:

Reaching activation energy is necessary because reactants require a minimum amount of energy start breaking a chemical bond.

Explanation:

Activation energy is the minimum amount of energy required by the reactants to initiate a chemical reaction. The unit of activation energy is joule or kilo joule per mole or kilo calories per mole. Activation energy depends on temperature.

The temperature dependence of activation energy is given by Arrhenious equation. Activation energy is a threshold value of energy. For any reaction to occur this is the minimum amount of energy required.

7 0

4 years ago

Read 2 more answers

A scientist wants to know if adults prefer watching movies in a theater or in their home. He interviews 500 people leaving a loc

Alex777 [14]

Answer:

The location of the survey is biased.

Explanation:

If someone left a movie theater, it is most likely because he likes watching movies there. A better place to interview would be on the streets, as it’s less biased there

8 0

3 years ago