Cross-Text Discussion

A hockey puck of mass 150 g is sliding south along the ice and slows at a rate of 1.2 m/s². What is the net force acting on the

Gnoma [55]

Answer:

0.18 N or 180 N

Explanation:

Mass,m = 150g

acceleration,a = 1.2m/s2

CHANGE FROM g TO kg

1kg =1000g

so 150g =150/1000 = 0.15kg

But Force, F = mass,m × acceleration,a

F=ma

F=0.15×1.2

F= 0.18 N

7 0

2 years ago

When light passes into a lower index medium it will be deviated away from the normal. True or false

V125BC [204]

Answer:

$\huge\underline\color{purple}{Answer ☘}$

Refraction is the bending of light (it also happens with sound, water and other waves) as it passes from one transparent substance into another.

Light refracts whenever it travels at an angle into a substance with a different refractive index (optical density).

<h3>when a light ray goes from a medium with higher refractive index to a medium with lower refractive index.. it gets deviated from the normal.</h3>

<h2>hence... the statement is true...</h2>

hope helpful~

7 0

2 years ago

Jonas has a 10.0 kg box, which he places on a scale inside an elevator. When the

Gennadij [26K]

Answer:

a = - 1.47 [m/s²], descending or going down

Explanation:

To solve this problem we must use Newton's second law which tells us that the sum of forces on a body is equal to the product of mass by acceleration.

∑F = m*a

where:

∑F = Forces applied [N]

m = mass = 10 [kg]

a = acceleration [m/s²]

Let's assume the direction of the upward forces as positive, just as if the movement of the box is upward the acceleration will be positive.

By performing a summation of forces on the vertical axis we obtain all the required forces and other magnitudes to be determined.

$-m*g + N = m*a\\$

where:

g = gravity acceleration = 9.81 [m/s²]

N = normal force measured by the scale = 83.4 [N]

Now replacing:

$-(10*9.81)+83.4=10*a\\-14.7=10*a\\a=-1.47[m/s^{2} ]$

The acceleration has a negative sign, this means that the elevator is descending at that very moment.

3 0

3 years ago

What force acts on a projectile in the horizontal direction?

natita [175]

Answer: horizontal force

Explanation:

i think

3 0

3 years ago

Read 2 more answers

The less internal heat a jovian planet emits the more it stirs up its clouds.

g100num [7]

The correct answer would be false. The less internal heat a jovian planet emits the lesser it stirs up its clouds making the atmosphere hotter. All of the four Jovian planets have unique atmospheres. They have more or less the same structures but they differ in their average temperature. As the distance of the planet is closer to the sun the atmosphere would be cooler. These planets are Jupiter, Saturn, Uranus and Neptune. They do not have a solid structure instead they are primarily composed of helium and hydrogen which makes them gas giants or ice planets. They are larger in size than the remaining planets in the solar system.

7 0

3 years ago

Cross-Text Discussion​

Cross-Text Discussion