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3 years ago

Which statement best describes a wave?

Physics

2 answers:

OleMash [197]3 years ago

4 0

Answer:

A continuous transmission of energy from one location to the next.

Explanation:

Wave is a disturbance which continuously transmit energy from one location to another. It does not transmit any mass. There are many types of waves like mechanical wave, electromagnetic wave, gravitational waves etc.

The speed of a wave is given by :

$v=\nu \times \lambda$

$\nu$ is the frequency of wave

$\lambda$ is the wavelength of the wave

So, the correct option is (d) "a continuous transmission of energy from one location to the next".

dedylja [7]3 years ago

3 0

Correct answer choice is:

D. A continuous transmission of energy from one location to the next.

Explanation:

Waves include the carrier of energy without the carrier of matter. In outcome, a wave can be characterized as a change that progresses into a medium, carrying energy from one spot (its source) to different spot without carrying matter.

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Please HELP!!! I will give brainliest to whoever gives honest help!!! A 500 kg satellite experiences a gravitational force of 30

ludmilkaskok [199]

Given that,

Mass of satellite = 500 kg

Gravitational force = 3000 N

We need to calculate the radius of the circular orbit

Using formula of gravitational force

$F_{g}=\dfrac{GMm}{(R+h)^2}$

Where, G = gravitational constant

R = radius of earth

h = radius of the circular orbit

M = mass of earth

m = mass of satellite

Put the value into the formula

$3000=\dfrac{6.67\times10^{-11}\times500\times6\times10^{24}}{(6.4\times10^{6})^2+h^2}$

$h^2=\dfrac{6.67\times10^{-11}\times500\times6\times10^{24}-3000\times(6.4\times10^{6})^2}{3000}$

$h=\sqrt{\dfrac{6.67\times10^{-11}\times500\times6\times10^{24}-3000\times(6.4\times10^{6})^2}{3000}}$

$h=5073460.35\ m$

$h=5.1\times10^{6}\ m$

(II). We need to calculate the speed of the satellite

Using formula of velocity

$v=\sqrt{\dfrac{GM}{r}}$

Put the value into the formula

$v=\sqrt{\dfrac{6.67\times10^{-11}\times6\times10^{24}}{5.1\times10^{6}}}$

$v=8858.36\ m/s$

$v=8.8\times10^{3}\ m/s$

$v=8.8\ km/s$

(III). We need to calculate the period of the orbit

Using formula of time period

$T=2\pi\sqrt{\dfrac{r^3}{GM}}$

Put the value into the formula

$T=2\pi\sqrt{\dfrac{(5.1\times10^{6})^3}{6.67\times10^{-11}\times6\times10^{24}}}$

$T=3617.40\ sec$

$T=1.00\ hr$

Hence, (I). The radius of the circular orbit is $5.1\times10^{6}\ m$

(II). The speed of the satellite is 8.8 km/s.

(III). The period of the orbit is 1.00 hr.

5 0

3 years ago

The speed of sound in air is 348m/s<br>what is the tempructure ?

Yuki888 [10]

Answer:

what is tempructure

just asking

4 0

3 years ago

A 15.5 kg block is pulled by two forces. The first is 11.8N at a 53.7 angle and the second is 22.9 N at a -15.8 angle. What is t

anygoal [31]

Answer:

α = 6.43° (Angle respect to the horizontal axis-x)

Explanation:

To solve this problem we must use Newton's second law which tells us that the sum of forces must be equal to the product of mass by acceleration.

Since we have two forces and we know their magnitudes and their directions, we can sum these into their X & y components, in this way we can find the resulting force and apply it in Newton's second law.

F1x = 11.8*cos(53.7) = 6.98 [N]

F1y = 11.8*sin(53.7) = 9.5 [N]

Now with the second force:

F2x = 22.9*cos (15.8) = 22.03 [N]

F2y = - 22.9*sin (15.8) = - 6.23 [N]

Now we sum the forces in the x and y axes:

Fx = F1x + F2x = 6.98 + 22.03 = 29.01 [N]

Fy = F1y + F2y = 9.5 - 6.23 = 3.27 [N]

Now using the Pythagorean theorem we can find the resulting force.

F = √(Fx² + Fy²)

F = √ (29.01)² + (3.27)²

F = 29.19 [N]

Using Newton's second law, we have:

F = m*a

where:

F = force = 29.19 [N]

m = mass = 15.5 [kg]

a = acceleration [m/s²]

a = 29.19/15.5

a = 1.88 [m/s²]

The direction of the acceleration is the same direction of the force, therefore we need to find the angle.

tan(α) = Fy/Fx

tan(α) = 3.27/29.01

α = tan⁻¹(0.1127)

α = 6.43° (Angle respect to the horizontal axis-x)

3 0

3 years ago

HELPPP WILL GIVE BRAINLIEST!!!!

marishachu [46]

Explanation:

Thermal energy is basically the energy derived from heat when there is a temperature change in a body.

Kinetic energy is the energy due to the motion of a body.

Potential energy is the energy at rest or due to the position of a body.

Thermal energy is highly related to kinetic and potential energy.
Thermal energy is a type of kinetic energy because it causes the motion of the particles in a body.
An increase in thermal energy gives the particles more energy to move and then, their kinetic energy increases.
Kinetic energy is directly related to thermal energy.
A low thermal energy increases the potential energy in a body.
A body at rest will exert its maximum potential energy.

learn more:

Thermal energy brainly.com/question/914750

#learnwithBrainly

4 0

4 years ago

A cylindrical rod of mass M. length L and radius R has two cords wound around it whose ends are a

Rudik [331]

Answer:

T = mg/6

Explanation:

Draw a free body diagram (see attached). There are two tension forces acting upward at the edge of the cylinder, and weight at the center acting downwards.

The center rotates about the point where the cords touch the edge. Sum the torques about that point:

∑τ = Iα

mgr = (1/2 mr² + mr²) α

mgr = 3/2 mr² α

g = 3/2 r α

α = 2g / (3r)

(Notice that you have to use parallel axis theorem to find the moment of inertia of the cylinder about the point on its edge rather than its center.)

Now, sum of the forces in the y direction:

∑F = ma

2T − mg = m (-a)

2T − mg = -ma

Since a = αr:

2T − mg = -mαr

Substituting expression for α:

2T − mg = -m (2g / (3r)) r

2T − mg = -2/3 mg

2T = 1/3 mg

T = 1/6 mg

The tension in each cord is mg/6.

7 0

3 years ago