1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
alekssr [168]
3 years ago
10

Could someone tell me if this is right or give me the answers so i can re write them! That would be so helpful:)

Physics
2 answers:
sweet-ann [11.9K]3 years ago
7 0

Answer:

They are right! Nice job!

Explanation:

Ivahew [28]3 years ago
6 0

Answer:

Those are all right

Explanation:

You might be interested in
What is the moment of inertia of a cube with mass M=0.500kg and side lengths s=0.030m about an axis which is both normal (perpen
prisoha [69]

Answer:

The moment of inertia I is

I = 2.205x10^-4 kg/m^2

Explanation:

Given mass m = 0.5 kg

And side lenght = 0.03 m

Moment of inertia I = mass x radius of rotation squared

I = mr^2

In this case, the radius of rotation is about an axis which is both normal (perpendicular) to and through the center of a face of the cube.

Calculating from the dimensions of the the box as shown in the image below, the radius of rotation r = 0.021 m

Therefore,

I = 0.5 x 0.021^2 = 2.205x10^-4 kg/m^2

8 0
3 years ago
Students were asked to create roller coasters for marbles. The only requirement is that the roller coaster include at least one
Karo-lina-s [1.5K]

Since energy is lost in the roller coaster due to friction, the hill should little lower than the starting height since some of the kinetic energy at the bottom of the first hill is lost  due to friction so it will not have as much potential energy at the top of the next hill.

A roller coaster is a good way to demonstrate the principle of conservation  of energy. Recall that energy is neither created nor destroyed but can be converted from one form to another.

In a roller coaster, all the heights are not the same because energy is lost along the line. Therefore, the students must bear in mind that  the hill should be at least a little lower than the starting height because some of the kinetic energy at the bottom of the first hill will be converted to other types of energy due to friction so it will not have as much potential energy at the top of the next hill.

Learn more: brainly.com/question/14281129

6 0
2 years ago
What will be the time period of simple pendulum at the center of earth​
Furkat [3]

Answer:

As g=0 at the centre of earth the time period becomes infinite as T=2pi/underoot g. At center of earth, r = 0 & hence g = 0. Time period of a simple pendulum is T = 2π sqrt (1/g).

Explanation:

7 0
3 years ago
una onda longitudinal tiene una frecuencia de 200 hz y una longitud de onda de 4.2m ¿cual es la rapidez de la onda?​
swat32

Answer:

v = 8.4 m/s

Explanation:

The question ays, "A longitudinal wave has a frequency of 200 Hz and a wavelength of 4.2m. What is the speed of the wave?".

Frequency of a wave, f = 200 Hz

Wavelength = 4.2 cm = 0.042 m

We need to find the speed of the wave. The formula for the speed of a wave is given by :

v=f\lambda\\\\v=200\times 0.042\\\\=8.4\ m/s

So, the speed of the wave is equal to 8.4 m/s.

4 0
2 years ago
What happens in terms of energy when a moving car hits a parked car, causing the parked car to move?
meriva
This is an example Newton's Third Law. All the kinectic energy from the moving car transferred the potential energy of the parked car. This potential is not much since the brakes are on (hopefully) and it's not in a non-moving position.
5 0
3 years ago
Read 2 more answers
Other questions:
  • A nurse counts 66 heartbeats in one minute. What is the period of the hearts oscillation? In minutes
    12·1 answer
  • You are asked to calculate an object's velocity, in order to do so you must know the object's ?
    12·1 answer
  • If the vector below is multiplied by 2, what will be its end point?
    14·2 answers
  • I WILL GIVE BRAINLIEST!!!!!!!!
    12·1 answer
  • How to calculate the velocity? the answer is 5.4 m/s I need the explication
    15·1 answer
  • When light is reflected by a mirror, the angle of an incidence is always?
    5·1 answer
  • Bethany had a beaker with a small amount of baking soda. She added a few drops of pickle juice to the baking soda and observed f
    12·2 answers
  • Kūna veikia 3N jėga kurios petys 20 cm. Koks jos momentas?​
    9·1 answer
  • A light wave has a frequency of <img src="https://tex.z-dn.net/?f=%286%20%5Ctimes%20%7B10%7D%5E%7B8%7D%29." id="TexFormula1" tit
    13·2 answers
  • Which is the best explanation for his results?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!