How far can a bike rider traveling at 5.2 m/s go in 15 seconds

Answers

Answer 1

Answer: If he's traveling at 5.2 m/s, then he covers
5.2 meters in the 1st second
5.2 meters in the 2nd second
5.2 meters in the 3rd second
5.2 meters in the 4th second
.
.
.
.
5.2 meters in the 14th second, and
5.2 meters in the 15th second.

He covers 5.2 meters 15 times in 15 seconds.
To find the total distance, you could write down 5.2 meters
15 times and add them all up. Or you could use the newly-
discovered, labor-saving process called 'multiplication' to do
the same thing. With multiplication, it can be done in one line:

(5.2 m/s) x (15 sec) = 78 meters .

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Radio waves travel at the speed of light, which is 3.00 u 108 m/s. How many kilometers will radio messages travel in exactly one year?

Answers

Answer:

Distance traveled will be $9.462* 10^(12)km$

Explanation:

We have given speed of the light $v=3* 10^8m/sec$

We have to find the distance traveled by light in 1 year

We know that 1 year = 8760 hour

And 1 hour = 60×60 = 3600 sec

So 1 year $=8760* 3600=3.154* 10^(7)sec$

We know that distance = speed × time

So distance traveled by light in one year $=3.154* 10^7* 3* 10^8=9.462* 10^(15)m$

We have to fond the distance in km

As we know that 1 km = 1000 m

So $9.462* 10^(15)m=(9.462* 10^(15))/(1000)=9.462* 10^(12)km$

Final answer:

Radio messages will travel approximately 9.46 x 10^12 kilometers in exactly one year.

Explanation:

Radio waves travel at the speed of light which is approximately 3.00 x 108 m/s.

To find out how many kilometers radio messages will travel in exactly one year, we need to first convert the speed of light into kilometers per second.

Since there are 1000 meters in a kilometer, we divide the speed of light by 1000 to convert from meters to kilometers. Then, we multiply this value by the number of seconds in a year (365 days x 24 hours x 60 minutes x 60 seconds) to get the total distance traveled in kilometers.

In summary, radio messages will travel approximately 9.46 x 1012 kilometers in exactly one year.

Learn more about Speed of light here:

brainly.com/question/32416355

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Which form of energy does a plant store when light is transformed during photosynthesis?a. chemical energy
b. thermal energy
c. mechanical energy
d. electrical energy

Answers

The answer is a. Chemical energy.

Photosynthesis is a process in plants wherein light energy is converted to chemical energy, which is then stored as glucose. This is stored in the chloroplasts.

Photosynthesis is divided into two stages: the light and dark stage. In the light stage, the light energy is converted into ATP and NADPH, these are like the energy cells of the plant. After the light stage, the ATP and NADPH that were produced are used in the dark stage. The dark stage will use these energy cells to transform carbon dioxide into sugar.

Answer:

Therefore, a. chemical energy plant store when light is transformed during photosynthesis.

Explanation:

Photosynthesis is the process plants and some algae use to convert light energy to chemical energy stored as sugar within chloroplasts .

Photosynthesis is 6CO2 + 6H20 + light energy = glucose + 6 oxygen.

Photosynthesis is divided into two main stages: light reaction and dark reaction. The light reaction converts light energy into adenosine triphosphate,

Which describes how the same force affects a small mass and a large massA.The large mass accelerates faster
B.The small mass accelerates faster
C.Both accelerate at the same time

Answers

The same force accelerates a small mass faster than
it accelerates a large mass.

It's easier to get a little red wagon going by pushing it
than it is to get a school bus going by pushing it.

an object with a mass of 70 kilograms is supported at a height 8 meters above the ground . whats the potential energy of the object with respect to the ground?....A...560 J ...B... 3,430 J...C...5,488.... D...2,058 J

Answers

As per the question the mass of the object is given as 70 kg.

The height of the object from ground is 8 m.

We are asked to calculate the potential energy of that object.

The potential energy of a object is the energy gained by the body due to its position or configuration. The energy due to the position of object from the surface is called gravitational potential energy .

If a body of mass m is at a height of h from the ground,then its potential energy is calculated as -

potential energy $[P.E]= mgh$

where g is the acceleration due to gravity.

we have been given h= 8 m and m= 70 kg

we know that acceleration due to gravity g =9. 8 m/s^2

⇒ $P.E =70 kg *9.8 m/s^2*8 m$

=5488 Joule

Here Joule is the unit of energy.

using the formula E = m* g*h the answer is C...5,488 J. BTW m is mass g is gravitational pull ( 9.8 )and h is height above ground

Which scientist did not directly contribute to the equations that make up the laws of planetary motion?Galileo Galilei
Isaac Newton
Johannes Kepler
Tycho Brahe

Answers

Newton. The others were well known for their theories in planetary motion.

What is the hottest layer in the Sun's atmosphere? photosphere corona core radiative zone chromosphere convective zone

Answers

The hottest layer in Sun's atmosphere is the Corona.The sun's atmosphere is composed of three main layers.1. Photosphere- the lowest layer and closest in distance from the the sun's core. It has an average temperature of 5,800 degrees Kelvin. It usually appears granulated and bubbly, like a simmering pot of water.2.Chromosphere- extends above the photosphere to about 2000 km. Its temperature is 4,500 - 10,000 degrees Kelvin.3. Corona - outermost layer of the sun, extending several million kilometers outward from the chromosphere into space. The average temperature averages 2 million degrees Kelvin. It is thought the sun's magnetism is the reason that the corona is so hot.

What is the hottest layer in the Sun's atmosphere?

Corona.

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