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earnstyle [38]
3 years ago
15

An iron ball and an aluminum ball of mass 100 g each are heated to the same temperature and then cooled to a temperature of 20°

Physics
1 answer:
Y_Kistochka [10]3 years ago
4 0
Becaused it the thing was cod that why
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What study did james e hansen focus on
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James E. Hansen studied climate change
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1 year ago
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The ice cap at the North Pole may be 1000 m thick, with a density of 920 kg/m3. Find the pressure at the bottom and the correspo
bija089 [108]
<span>Pice=920kg/m^3 deltaP=PgH=920kg/m^3 X 9.80665m/s^2 X 1000m = 9022118 Pa P=Po + deltaP=101.325 + 9022 = 9123kPa</span>
7 0
3 years ago
A striped billiard ball moves toward the right with speed 3 m/s. A solid billiard ball with the same mass moves toward the left
Helen [10]

Answer:

Final speed of striped ball is 3 m/s in left direction .

Explanation:

Given :

Two billiard ball with the same mass moves toward the left at the same speed 3 m/s .

Let , us assume right hand side direction to be positive and left hand side direction to be negative .

Also , let speed of ball after collision is (striped ball ) u and (solid ball) v .

It is also given that the collision is elastic .

Therefore , kinetic energy is conserved .

\dfrac{m(3)^2}{2}+\dfrac{m(3)^2}{2}=\dfrac{mu^2}{2}+\dfrac{mv^2}{2}\\\\u^2+v^2=18 ...... ( 1 )

Also , by conserving linear momentum .

We get :

3m-3m=mu+mv\\u=-v                ...... ( 2 )

Putting value of u from equation 2 to equation 1 .

We get :

2v^2=18\\v=3\ m/s

And , u = -3 m/s .

Therefore , final speed of striped ball is 3 m/s in left direction .

Hence , this is the required solution .

4 0
3 years ago
Explain between the cause of high probability of accidents of loaded vehicles in over speed on the basis of the first law of mot
Setler [38]

Cause of high probability of accidents of loaded vehicles in over speed effected by momentum on the basis of first law of motion.

<h3>What does Newton's first law say?</h3>

When we are standing inside a bus and it brakes abruptly, due to inertia, we are thrown forward. When a car is going around a curve it is necessary for a force to act, otherwise the car will go in a straight line.

the cause of high probability of accidents of loaded vehicles in over speed occurs large amount of momentum.

See more about momentum at brainly.com/question/24030570

#SPJ1

8 0
2 years ago
There is a small scratch on a disco record located 14.5 cm from the center. When played, the scratch makes the record skip 30 ti
LuckyWell [14K]

Answer:

The linear speed of scratch is 45.55 cm/dec

Explanation:

The scratch located from the center at radial distance = 14.5 cm.

Each minute the skip of scratch when disco record played  = 30 times

Since, the scratch on the disc start revolving when disc is played and in one minute the scratch revolve 30 times. Therefore, the revolution = 30 RPM

Below is the calculation of linear speed of the scratch.

Angular \ velocity, \ w \ = \frac{2 \pi  \times RPM}{60} \\

w  =  \frac{2 \pi  \times 30}{60} = \pi  \ rad/dec \\

Linear \ velocity = wr \\

r = radial \ distance \\

v = \pi \times 14.5 \\

v = 45.55 cm/dec

3 0
2 years ago
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