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kobusy [5.1K]
3 years ago
12

Scientific explanation of the term “speed”

Physics
1 answer:
Wewaii [24]3 years ago
6 0

Answer:

24erfvtgvcd2s

Explanation:

2d343f5vrc3344drews3wqqeq

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How much work can a 22kw car engine do in 60 seconds
Sindrei [870]

Answer:

13.2 x 10^5 J

Explanation:

Power = work/time

Given

Power = 22kw

= 22 x 1000 = 22000w

Time = 60 secs

Therefore

22000 = work/60

Cross multiply

Work = 22000 x 60

= 1320000

= 13.2 x 10^5J

6 0
3 years ago
Read 2 more answers
Two objects are dropped from different heights at the same instant. If the first object takes 10.7 seconds to hit the ground and
Lubov Fominskaja [6]

Answer:

The answer to your question is : 521.8 m

Explanation:

Data:

Different heights

Time first object (tfo) = 10.7 s

Time second object (tso)= 14.8 s

Initial speed of both objects(vo) = 0 m/s

a = 9.81 m/s²

Formula:

h = vot + 1/2 (a)(t)² but vo = 0    so, h = 1/2 (a)(t)²

Then, height fo      h = 1/2 (9.81)(10.7)² = 561.6 m

          height so     h = 1/2(9,81)(14.8)² = 1074.4 m

Difference in their heights =  1074.4 m - 561.6 m = 521.8 m

5 0
3 years ago
On the moon, a feather is dropped from a height of 1.40 m. The acceleration of gravity on the moon is -1.67 m/s2. Determine the
Molodets [167]

Answer:

1.29 s

Explanation:

  • Height = 1.40m
  • Acclⁿ due to gravity = 1.67 m/s²
  • Time of descent = ?

As we know that ,

\sf\longrightarrow Time_{descent}= \sqrt{\dfrac{2H}{g_{(moon)}}}\\\\\sf\longrightarrow t_d = \sqrt{\dfrac{ 2\times 1.4}{1.67}} \\\\\sf\longrightarrow t_d =\sqrt{1.67} s\\\\\sf\longrightarrow \boxed{\red{\sf Time_{descent}= 1.29 s }}

4 0
3 years ago
An advantage of electron microscopes compared to light microscopes is that electron microscopes are inexpensive and commonly use
Aleks04 [339]

The statement ‘An advantage of electron microscopes compared to light microscopes is that electron microscopes are inexpensive and commonly used in most biology laboratories allow you to view living cells, while light microscopes do not have higher resolution that allows you to view smaller specimens allow you to view the true colors of the specimens being viewed’ is true. In fact, electron microscope is more efficient than a light microscope due to its mechanism using only light without magnifying the specimen a thousand times.

5 0
3 years ago
Read 2 more answers
What radiation lies at frequencies just below the frequencies of visible light?
vlabodo [156]
<span>Infrared radiation also called as infrared light was discovered by Sir William Herschel in 1800.It is an electronic magnetic radiation with longer wavelengths than those of a visible light.It involves waves rather than particles. It lies at frequencies just below the frequencies of visible light.</span>
3 0
4 years ago
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