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4 years ago

HELP PLEASE!!!!

2 answers:

5 0

Conduction is the transfer of energy by two contacting solids.

Convection is the transfer of energy from a body to another body by a medium of a fluid (gas or liquid)

Radiation is the transfer of energy by the radiated waves of and object or an energy source

Len [333]4 years ago

3 0

Conduction: transfer through two solid items
Convection: transfer through a fluid
Radiation: transfer through electromagnetic waves

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Describe the shape of the earth besides round and tell me how it rotates

NNADVOKAT [17]

Answer:

The Earth is in hydrostatic equilibrium pretty much. Which is to say that if it were entirely liquid it would still be the same shape ignoring minor differences like mountain ranges that are in any case indistinguishable on the large scale.

A spinning liquid sphere will flatten out somewhat at the axis poles and expand somewhat in its equatorial region and that’s the way the Earth is.

Hope it wirks

8 0

2 years ago

(III) A baseball is seen to pass upward by a window with a vertical speed of If the ball was thrown by a person 18 m below on th

Ghella [55]

Answer:

Assuming that the vertical speed of the ball is 14 m/s we found the given values:

a) V₀ = 23.4 m/s

b) h = 27.9 m

c) t = 0.96 s

d) t = 4.8 s

Explanation:

a) Assuming that the vertical speed is 14 m/s (founded in the book) the initial speed of the ball can be calculated as follows:

$V_{f}^{2} = V_{0}^{2} - 2gh$

Where:

$V_{f}$ : is the final speed = 14 m/s

$V_{0}$ : is the initial speed =?

g: is the gravity = 9.81 m/s²

h: is the height = 18 m

$V_{0} = \sqrt{V_{f}^{2} + 2gh} = \sqrt{(14 m/s)^{2} + 2*9.81 m/s^{2}*18 m} = 23.4 m/s$

b) The maximum height is:

$V_{f}^{2} = V_{0}^{2} - 2gh$

$h = \frac{V_{0}^{2}}{2g} = \frac{(23. 4 m/s)^{2}}{2*9.81 m/s^{2}} = 27.9 m$

c) The time can be found using the following equation:

$V_{f} = V_{0} - gt$

$t = \frac{V_{0} - V_{f}}{g} = \frac{23.4 m/s - 14 m/s}{9.81 m/s^{2}} = 0.96 s$

d) The flight time is given by:

$t_{v} = \frac{2V_{0}}{g} = \frac{2*23.4 m/s}{9.81 m/s^{2}} = 4.8 s$

I hope it helps you!

3 0

4 years ago

Suppose we replace both hover pucks with pucks that are the same size as the originals but twice as massive. otherwise, we keep

kvv77 [185]

This pair of pucks will rotate at the same rate.

Further Explanation:

Hover Puck:

The Hover Puck coasts effectively on a self-produced pad of air until followed up on by an outside power.

Employments of hover puck:

The Hover Puck coasts effectively on a self-produced pad of air until followed up on by an outside power.

• Use one Hover Puck to show themes from Newton's First Law to impacts to reflection.

• Use at least two pucks to examine the protection laws in two measurements.

• Set up a bowling alley utilizing plastic beverage bottles.

Innovation of hover puck:

The First Rubber Hockey Pucks Were Made From Sliced-Up Lacrosse Balls. At the point when the game moved inside, entire balls were initially utilized, yet arena proprietors before long thought that it was desirable over cut them into thirds and keep the center segment. This fundamental plan was the standard by 1885.

hockey puck was developed:

The hockey puck appeared in 1875. It's hazy who really imagined it. Specialists accept the main hockey puck was likely only an elastic ball cut down the middle. This gave players an article with a level side that would slide over the ice.

Subject: physics

Level: High School

Keywords: Hover Puck, Employments of hover puck, Innovation of hover puck, hockey puck was developed.

Related links:

Learn more about evolution on

brainly.com/question/727976

brainly.com/question/6953278

5 0

4 years ago

Read 2 more answers

Lonnie pitches a baseball of mass 0.20 kg. The ball arrives at home plate with a speed of 40 m/s and is batted straight back to

suter [353]

Answer:

B) 20N.s is the correct answer

Explanation:

The formula for the impulse is given as:

Impulse = change in momentum

Impulse = mass × change in speed

Impulse = m × ΔV

Given:

initial speed = 40m/s

Final speed = -60 m/s (Since the the ball will now move in the opposite direction after hitting the bat, the speed is negative)

mass = 0.20 kg

Thus, we have

Impulse = 0.20 × (40m/s - (-60)m/s)

Impulse = 0.20 × 100 = 20 kg-m/s or 20 N.s

4 0

3 years ago

Which aspect of health is best illustrated by the following example? I work well in a group and

Yuri [45]

Social is the answer

7 0

3 years ago