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2 years ago

Does light have to have a medium to pass through?

Physics

1 answer:

skad [1K]2 years ago

7 0

Answer:

Light does not require any medium to travel because light is a transverse wave

hope it helps

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Vector B has x, y, and z components of 2.2, 6.6, and 5.5 units, respectively.

Aloiza [94]

Answer:

8.9 units

Explanation:

The magnitude of a 3-D vector B can be calculated by using the formula:

$|B| = \sqrt{B_x^2+B_y^2+B_z^2}$

where $B_x, B_y, B_z$ are the x, y and z components of the vector, respectively.

For the vector in the problem:

$B_x = 2.2\\B_y = 6.6\\B_z = 5.5$

Substituting into the equation, we find the magnitude of B:

$B=\sqrt{2.2^2+6.6^2+5.5^2}=8.9$

So, the magnitude of B is 8.9 units.

3 0

3 years ago

According to the law of universal gravitation, any two objects are attracted to each other. The strength of the gravitational fo

3241004551 [841]

C. Planet A orbits its star faster than Planet B.

Explanation:

since Planet A is closer to the star due to its gravitational force, it will orbit its star faster than planet B

hope this helps :)

5 0

2 years ago

An LC circuit consists of a 3.14 mH inductor and a 5.08 µF capacitor. (a) Find its impedance at 55.7 Hz. 563.57 Correct: Your an

ANEK [815]

Answer:

$z=561.7$

$z=214.1$

Explanation:

L = inductance of the Inductor = 3.14 mH = 0.00314 H

C = capacitance of the capacitor = 5.08 x 10⁻⁶ F

f = frequency = 55.7 Hz

Impedance is given as

$z=\frac{1}{2\pi fC} - 2\pi fL$

$z=\frac{1}{2(3.14) (55.7)(5.08\times 10^{-6})} - 2(3.14) (55.7)(0.00314)$

$z=561.7$

f = frequency = 11000 Hz

Impedance is given as

$z= - \frac{1}{2\pi fC} + 2\pi fL$

$z= - \frac{1}{2(3.14) (11000)(5.08\times 10^{-6})} + 2(3.14) (11000)(0.00314)$

$z=214.1$

4 0

3 years ago

A motorcycle has a constant acceleration of 3.49 m/s2. Both the velocity and acceleration of the motorcycle point in the same di

Vilka [71]

Answer:

(a)2.865 s

(b)2.865 s

Explanation:

We are given that

Acceleration,a= $3.49 m/s^2$

a.Initial speed,u=29 m/s

Final speed,v=39 m/s

We know that

$t=\frac{v-u}{a}$

Using the formula

$t=\frac{39-29}{3.49}=2.865 s$

b.Initial speed,u=59 m/s

Final speed,v=69 m/s

Again using the formula

$t=\frac{69-59}{3.49}=2.865 s$

7 0

2 years ago

What are laws of newton

Black_prince [1.1K]

Answer:

In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction

Explanation:

6 0

2 years ago

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