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Kisachek [45]
2 years ago
5

A particle in a 799=m-long linear particle accelerator is moving at 0.875C. How long does the particle accelerator appear to the

particle?
Physics
1 answer:
barxatty [35]2 years ago
6 0

the answer is 386m because m = pi mc=2.23

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A hill is 132 m long and makes an angle of 12.0 degrees with the horizontal. As a 54 kg jogger runs up the hill, how much work d
TEA [102]

Answer:

14523.55J

Explanation:

The work done by the jogger against gravity is given by the following equation;

W=mgh.................(1)

where m is the mass, g is acceleration due to gravity taken as 9.8m/s^2 and h is the height of the hill.

Since the length of the hill is 132m and it is inclined at 12 degrees to the horizontal, the height is thus given as follows;

h=132sin12^o\\h=27.44m

Substituting this into equation (1) with all other necessary parameters, we obtain the following;

W=54*9.8*27.44\\W=14523.55J

4 0
3 years ago
Identify three situations in which convection occurs
hodyreva [135]

There are three types of heat conduction through substances. These are named as conduction,convection and radiation .here we have been given convection.

Convection is the type of mode of conduction of heat in which heat will flow though a liquid and gases due to the direct physical movement of particles.In this process the hotter particles will go upward as they become lighter and cooler,heavier particles come downward which after being heated up go upward .Hence a convectional current is formed for which whole of the liquid or gas gets heated.

There are different life examples of convection.

One may take an simple example of water in a container.The water molecules which are present bottom part of the container  will be heated up first and go upward.The upper particles will come downward and they will constitute a convectional current.

Another life example is the flow of wind from one region to another region.the air at hotter region will become lighter and goes upward and the wind starts flowing from cold region region  in order to occupy the vacant space.

Another example is the hot air balloon rising up..It is also another example of convection of heat

3 0
3 years ago
Read 2 more answers
What's it called when a liquid changes to a solid
r-ruslan [8.4K]

Answer:

solidification

Explanation:

8 0
3 years ago
Please help on this one?
scoray [572]

option B open system

because in open system energy and mass can escape from the system or can be added to it.

8 0
3 years ago
A hair dryer with a resistance of 9.6 ohms operates at 120 volts for 2.5 minutes. The total electrical energy used by the dryer
Talja [164]

Answer:

2.25\cdot 10^5 J

Explanation:

First of all, we have to find the power used by the hair dryer, which is given by

P=\frac{V^2}{R}

where

V = 120 V is the voltage

R=9.6 \Omega is the resistance of the hair dryer

Substituting,

P=\frac{(120 V)^2}{9.6 \Omega}=1500 W

Now we can find the total electrical energy used, given by

E=Pt

where P is the power and

t = 2.5 min = 150 s is the time

Substituting,

E=(1500 W)(150 s)=2.25\cdot 10^5 J

5 0
3 years ago
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