List several examples that show how electrical energy and light energy are useful to you

Answers

Answer 1

Answer: electrical energy and light energy are useful to us in variety of ways from the machines used to make the food you eat to the energy to purify the water you drink. The clothes you wear are even dyed different colors from the light energy.

Answer 2

Answer:

Final answer:

Electrical energy is useful for powering electronic devices and transportation systems, while light energy allows us to see and supports important processes like photosynthesis.

Explanation:

Electrical energy and light energy are useful in various ways in our daily lives.

Electrical energy:

Powering electronic devices such as computers, smartphones, and kitchen appliances.
Providing lighting in homes, offices, and streets.
Running transportation systems like electric cars, trains, and subways.

Light energy:

Allowing us to see our surroundings and providing vision.
Supporting the process of photosynthesis in plants, which is vital for the production of our food and oxygen.
Used in various medical applications such as X-rays, ultraviolet therapy, and laser surgeries.

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Related Questions

A heater with an effective resistance of 4.8 ohms is connected to 240.0 volts if it operated approximately 25% of the time and electricity costs $0.10 per kWh what will be the electrical bill for30 days
The peak of the trajectory occurs at time t1. This is the point where the ball reaches its maximum height ymax. At the peak the ball switches from moving up to moving down, even as it continues to travel horizontally at a constant rate.. . Part C. . What are the values of the velocity vector components v1,x and v1,y (both in m/s) as well as the acceleration vector components a1,x and a1,y (both in m/s2)? Here the subscript 1 means that these are all at time t1.. . A) 0, 0, 0, 0. B) 0, 0, 0, -9.80. C) 15.0, 0, 0, 0. D) 15.0, 0, 0, -9.80. E) 0, 26.0, 0, 0. F) 0, 26.0, 0, -9.80. G) 15.0, 26.0, 0, 0. H) 15.0, 26.0, 0, -9.80
An umbrella policy is designed to cover:A. expensive personal property. B. additional buildings on your property. C. property when traveling away from home. D. major personal liability suits.
If the compass direction of a resultant vector is reported as 27 degrees southof west, what is the global angle of the vector?
a 4768-kg roller coaster train full of riders approaches the loading dock at a speed of 17.1 m/s. It is abruptly decelerated to a speed of 2.2 m/s over a distance of 13.6m. Determine the magnitude of the restraining force that acts upon the roller coaster cars.

Different velocity-time graph lines are shown, displaying the behavior of multiple race carts along a linear track.Which description correctly identifies cart C?

A) Has a positive acceleration and is speeding up.
B) Moving with zero acceleration.
C) Moving at a constant acceleration.
D) Has a negative acceleration and is slowing down.

Answers

B) Moving with zero acceleration.

Explanation:

Acceleration is defined as the rate of change of the velocity per unit time:

$a=(\Delta v)/(\Delta t)$

In a velocity-time graph, this ratio corresponds to the slope of the curve. In fact:

$\Delta v$ (change in velocity) corresponds to the increase in the y-axis

$\Delta t$ (change in time) corresponds to the increase in the x-axis

So, acceleration corresponds to the slope of the curve in a velocity-time graph. For cart C, the slope is zero, therefore the acceleration is also zero.

Answer:

B) Moving with zero acceleration.

Explanation:

As we can see the graph for Cart C that its velocity is constant and not changing its magnitude as well as its sign

So here the magnitude and direction is constant so we can say that velocity will remain constant always.

Where we can define the acceleration as

$a = (dv)/(dt)$

so here if magnitude and direction both are constant so

$a = 0$

so we can say that acceleration of cart C is ZERO

so correct answer will be

B) Moving with zero acceleration.

When it comes to our place in the solar system today which model do we accept

Answers

we use the HELIOCENTRIC

If you can throw a ball at 20m/s what is the maximum distance you can throw it?

Answers

it depends on how long the ball stays in the air
1 s=20m
10 s=200m

Final answer:

The maximum distance that a ball can be thrown at a speed of 20 m/s depends on the angle at which the ball is thrown. In ideal conditions and at a 45-degree angle, the theoretical maximum distance is approximately 40.57 meters.

Explanation:

The question is asking about the maximum distance you can throw a ball given an initial speed, which is a topic in Physics known as projectile motion. In an ideal condition, where air resistance is ignored, the maximum distance a projectile can travel is achieved when it is launched at an angle of 45 degrees.

However, we are missing a piece of information in this situation, which is the launch angle. Without knowing the angle at which the ball is thrown, we cannot accurately calculate the maximum distance. Theoretically, if the ball is thrown at an angle of 45 degrees, the distance (d) can be obtained using the formula for the range of a projectile: d = (v^2)/g, where v is the initial speed and g is the acceleration due to gravity. Substituting the value, d = (20^2)/9.81 = 40.57 meters. But this is an estimation and the value could change according to the actual circumstances when the ball is thrown.

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Why was the idea of plate tectonics difficult for many scientists to accept for many years after it was first introduced?SCIENCE QUESTION

Answers

It's kind of funny really. The guy who invented the idea in the first place had actually been made fun of because the thought of that happening was improbable in their mind. Also, Wegener ( the guy who invented the idea) was not even a geologist but a meteorologist. But later it had been backed up due to earthquakes being record consecutively in one area, and the graphs turning out differently.

In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 1.50×1016 kg and a radius of 9.00 km .What is the speed of a satellite orbiting 4.60 km above the surface?

Answers

Answer:

8.58 m/s.

Explanation:

Given,

Mass of the asteroid,M = 1.50 x 10¹⁶ Kg

radius = 9 Km

distance of the satellite, r = 4.60 Km

Speed of the satellite = ?

R = 9 + 4.60 = 13.60 Km

Speed of the satellite rotating in orbit

$v = \sqrt{(GM)/(R)}$

G is gravitational constant

$v = \sqrt{(6.67* 10^(-11)* 1.50* 10^(16))/(13.60* 10^3)}$

v = 8.58 m/s

Speed of the satellite is equal to 8.58 m/s.

A plane leaves the airport in Galisteo and flies 170 km at 68.0° east of north; then it changes direction to fly 230 km at 36.0° south of east, after which it makes an immediate emergency landing in a pasture. When the airport sends out a rescue crew, in which direction and how far should this crew fly to go directly to this plane?

Answers

Answer:

The direction will be $84.86^\circ$ and the distance 250.75km.

Explanation:

Let's say A is the displacement vector which represents the first 170km and B the one for the next 230km. Then the components of these vector will be:

$A_x=170cos(68^(\circ))\n A_y=170sin(68^\circ)\n\nB_x=230cos(-36^\circ)\nB_y=230sin(-36^\circ)$