All categories

2 years ago

What type of electromagnetic waves will we need to use to complete our discussion-based assessment in the virtual meeting room?

Physics

1 answer:

Illusion [34]2 years ago

8 0

Answer:

im literally learning about electromagnetic waves and light waves are electromagnetic waves which means they do not need a medium to travel through.

Explanation:

You might be interested in

Magnesium hydroxide is used in? soap batteries antacids detergents

Inga [223]

The answer is antacids

3 0

2 years ago

Read 2 more answers

Can someone help me out??? I need this done ASAP TYSM!!

Reil [10]

Answer:

Answer is D

Explanation:

By changing the direction of the current moving through the wire will change polarity of the magnet but it will not affect the strength of the magnet.

3 0

3 years ago

Dark matter has been detected by its

Zinaida [17]

Dark matter has been detected by its gravitational pull.

7 0

3 years ago

The hydraulic oil in a car lift has a density of 8.30 102 kg/m³. The weight of the input piston is negligible. The radii of the

denpristay [2]

Answer:

(a) $F_i=68.58\ N$

(b) $F_i=69.903\ N$

Explanation:

Given:

density of hydraulic oil, $\rho=830\ kg.m^{-3}$

radius of input piston, $r_i=6.3\times 10^{-3}\ m$

radius of output plunger, $r_o=0.125\ m$

force to be supported, $F_o=27000\ N$

(a)

Condition:The bottom surfaces of piston and plunger at the same level.

According to Pascal's law the pressure of a fluid is exerted equally in all directions against the walls of its container.

Mathematically:

$\frac{F_i}{A_i} =\frac{F_o}{A_o}$

putting respective values

$\frac{F_i}{\pi\times r_i^2} =\frac{27000}{\pi\times r_o^2}$

$\frac{F_i}{\pi\times (6.3\times 10^{-3})^2} =\frac{27000}{\pi\times 0.125^2}$

$F_i=68.58\ N$

(b)

Condition:The bottom surface of the output plunger is 1.30 m above that of the input piston.

Given:

$h=1.3\ m$

Now,

$P_i=P_o+\rho.g.h$

$\frac{F_i}{\pi\times (6.3\times 10^{-3})^2} =\frac{27000}{\pi\times 0.125^2} +830\times 9.8\times 1.3$

$F_i=69.903\ N$

7 0

3 years ago

What factor gives citizens' groups influence over legislators on environmental issues?

adelina 88 [10]

their leaders can run for office

4 0

3 years ago