All categories

2 years ago

PLEASE HELP :) <3

Physics

1 answer:

Bad White [126]2 years ago

5 0

Protection in a volcanic ashfall:

Stay inside, if possible, with windows and doors closed.

Wear long-sleeved shirts and long pants.

Use goggles to protect your eyes.

Keep your car or truck engine switched off.

Protection from earthquake if you're indoors:

Drop down and take cover under a desk or table

Stay inside until the shaking stops and it is safe to exit.

Stay away from bookcases and other furniture that can fall on you.

Stay away from windows and light fixtures.

If you are in bed – hold on and stay there.

You might be interested in

Two tugs are towing a small ship. The tugs pull with forces of 600 N and 800 N respectively and there is an angle of 45 degrees

bija089 [108]

Yeah it’s ok I’m gonna start talking about to start a movie I guess I can get a hold on my computer I just got to the hood and brown and orange juice and brown and orange brown green green orange green green brown brown orange brown green brown yellow brown orange green brown orange orange

3 0

2 years ago

What happens when you drop a penny from a height of 20 meters

Jet001 [13]

I'm not entirely sure but I believe that it will hit the ground and bounce back up

3 0

3 years ago

Which of the following is NOT a result of supernova explosions? The neutron core is completely destroyed. Any planets within a f

DanielleElmas [232]

Answer:

The neutron core is completely destroyed

Explanation:

A earth - supernova is an explosion resulting to the death of a star that occurs close enough to the earth but this does not completely destroy a star. Supernovae are the most violent explosions in the universe. But they do not explode like a bomb explodes, blowing away every bit of the original bomb. Rather, when a star explodes into a supernova, its core survives. The reason for this is that the explosion is caused by a gravitational rebound effect and not by a chemical reaction. Stars are so large that the gravitational forces holding them together are strong enough to keep the nuclear reactions from blowing them apart. It is the gravitational rebound that blows apart a star in a supernova.

4 0

2 years ago

What is the best insulator?

Aleonysh [2.5K]

Answer:

Explanation:

All others conduct electricity and heat.

6 0

2 years ago

Read 2 more answers

Sam, whose mass is 75 kg , takes off across level snow on his jet-powered skis. The skis have a thrust of 160 N and a coefficien

Volgvan

Answer:

top speed = 17.25

Total height = 281.19 m

Explanation:

given data

mass = 75 kg

thrust = 160 N

coefficient of kinetic friction = 0.1

solution

we get here frictional force acting that is

frictional force = $\mu *m*g$ .............1

frictional force = 0.1 × 75 × 9.8

frictional force = 73.5 N

and

Net force acting will be F = 160 - 73.5 N

F = 86.5 N

Acceleration in the First 15 second will be

F = ma .........2

86.5 = 75 × a

a = 1.15 m/s²

and

now After 15 second the velocity will be as

v = u + at ..........3

here u is 0

so v will be

V = 1.15 × 15

v = 17.25

and

now we get travels distance S in 15 s

s = u × t + 0.5 × a × t²

here u is 0

so distance s will be

s = 0.5 × a × t²

s = 0.5 × 1.15 × 15²

s = 129.37 m

and

now acceleration acting is

F = $\mu *m*g$

m a = $\mu *m*g$

a = $\mu* g$

a = - 0.98

here it is negative it mean downward nature of acceleration

and

now we get distance s by this formula

V² - u² = 2 a s

here v velocity is 0 and

u initial velocity is 17.25 m/s

put here value

0 - 17.25² = 2 × (-0.98) × s

solve it we get

s = 151.82 m

Total height is

Total height = 129.37 m + 151.82 m

Total height = 281.19 m

7 0

2 years ago