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Aleks04 [339]
4 years ago
8

Wyatt is moving a box with a mass of 37 kg a distance of 37 meters. Wyatt did 360 J of work in 2 minutes when moving the box. Wh

at was his power output?
Physics
1 answer:
Elza [17]4 years ago
7 0

Answer:

the answer should be 550 j because i just did it

Explanation:

all you have to do is add all of them up and get your answer

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Would a liquid’s refractive index measured at a high altitude be different from that measured at sea level?
Murrr4er [49]
By definition, refractive index is the ratio of the velocity of light in vacuum to the velocity of light in a specified medium. The medium here is the liquid. The speed of light through the liquid also depends on the temperature and pressure. At sea level, the liquid is higher in temperature and pressure. So, the speed is gonna be relatively slower because of the movement of atoms. At high altitude, the liquid is at a lower temperature and pressure. The movements of the molecules are lesser, thus, light can move much faster. So, yes, it would be different. The refractive index would be closer to 1 at high altitude, and greater than 1 at sea level.
6 0
3 years ago
Which scenario describes the damage caused by a tornado?
9966 [12]

The answer is a path of destruction up to 50 miles long with destroyed trees and homes.

Tornadoes form from severe thunderstorms. Wind in the higher altitude of the storm moving at a greater velocity than wind at a lower altitude creates a vertical wind shear. The faster-moving winds aloft come from the west and create an updraft when they meet slower-moving wind close to the ground that is moving in the opposite direction. As warm surface air moves upward into the thundercloud, the rotating air creates a vortex.

The image below shows before and after damage of a tornado.

7 0
3 years ago
Read 2 more answers
The volume of a gas can be converted to moles by
BaLLatris [955]
B. Because I say so
6 0
3 years ago
A 26.0-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 225 N. For the first 11.0 m th
frozen [14]

Answer:

18 m/s

Explanation:

Force is given by mass × acceleration

<em>F = ma</em>

<em>a = F/m</em>

For the first 11.0 m, there is no friction. Hence, the constant force is applied fully on the crate. The acceleration is

<em>a = </em>225/26.0<em> </em>m/s²

By the equation of motion, <em>v² = u² + 2as</em>

where <em>v</em> is the final velocity, <em>u</em> is the initial velocity, <em>a</em> is the acceleration and <em>s</em> is the distance travelled.

Using the values for the first part of the motion,

<em>v² = </em>0² + 2 × 8.65 × 11.0

<em>v = </em>13.8 m/s

This is the initial velocity for the second part of the motion. This part has friction of coefficient 0.20.

The frictional force = 0.20 × weight = 0.20 × 26.0 × 9.8 = 50.96 N

The effective force moving the crate in the second motion = 225 - 50.96 N = 174.04 N

This gives an acceleration of 174.04/26.0 = 6.69 m/s².

Using parameters for the equation of motion, <em>v² = u² + 2as</em>

<em>v² = </em>13.8² + 2 × 6.69 × 10 = 324.24

<em>v = </em>18<em> </em>m/s

8 0
4 years ago
When you look at yourself in a convex mirror, you appear to be ¼ your actual size. If you are standing 1.0 m in front of the mir
Nookie1986 [14]

Answer:

The focal length is   f  =  -0.2 \  m

The radius of curvature is R = -0.4 \  m

Explanation:

From the question we are told that

       The magnification of the mirror is  m =  \frac{1}{2}

       The distance of the person from the mirror(the object distance ) is  u = - 1.0 \ m

        The negative sign shows that it is been placed in front of the mirror

         

Generally the magnification of the mirror is mathematically represented as

       m  =  \frac{v}{u}

=>   \frac{1}{4}  = \frac{v}{-u}

=>   v  =  \frac{- 1}{4}

Generally from the lens equation we have that

        \frac{1}{f}  = \frac{1}{u}  + \frac{1}{v}

=>     \frac{1}{f}  = \frac{1}{-1 }  + \frac{1}{-\frac{1}{4} }

=>     f  =  -0.2 \  m

Generally the radius of curvature is  mathematically represented as

         R = 2 *  f

=>      R = 2 *   - 0.2

=>      R = -0.4 \  m

8 0
3 years ago
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