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Leviafan [203]
3 years ago
6

What is a pulley and the how does it make lifting heavy loads easier?

Physics
1 answer:
Novosadov [1.4K]3 years ago
8 0
It uses kinetic energy
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List two ways of recording or measuring absolute time
enyata [817]

Answer:

Stop watch

Stop clock

Explanation:

Absolute time is time measured in definite periods such as minutes, days, and years. It can be measured uising stop watch or stop clock

7 0
3 years ago
g A particle (charge = +40 mC) is located on the x axis at the point x = -20 cm, and a second particle (charge = -50 mC) is plac
krok68 [10]

Answer:

Explanation:

We shall find electric field at origin due to two given charges sitting   on the either side of origin .

Total field will add up due to their same direction .

Field due to a charge Q

= 9 x 10⁹ x Q / R²  ;  R is distance of point , Q is charge

Field due to first charge

= 9 x 10⁹ x 40 x 10⁻³ / 2² x 10⁻⁴

= 90 x 10¹⁰ N/C

Field due to second  charge

= 9 x 10⁹ x 50 x 10⁻³ / 2² x 10⁻⁴

= 112.5 x 10¹⁰ N/C

Total field

= 202.5 x 10¹⁰ N/C

Force on given charge at origin

= charge x field

= 4 x 10⁻³ x 202.5 x 10¹⁰

= 810 x 10⁷ N .

4 0
4 years ago
1 oto đang có v = 54km /h thì hãm phanh . cđ chậm dần đều đi đc 50m nữa thì dừng lại xác định gia tốc , vận tốc oto sau 2 giây k
madam [21]

Answer:

huh?

Explanation:

I'm so sorry but, i don't get it

3 0
3 years ago
An automobile slows from 26 m/s to 18 m/s. Its acceleration is −2.0 m/s 2 . How much time does it take for the vehicle to slow d
Serggg [28]

Answer:4.0s

Explanation:jus is

4 0
3 years ago
An ocean wave is an example of what type of wave​
Tanzania [10]

Answer:

It is called a surface wave (rayleigh wave) that transmits its energy with the wind blowing onto its surface.Hope this helps

7 0
3 years ago
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