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stellarik [79]
3 years ago
14

I need help on 6 7,8 and 9

Physics
1 answer:
pantera1 [17]3 years ago
7 0
6. F- DNA
7. C
8. G
9. D
I believe these are correct, hope this helps. 
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Suppose that a pendulum has a period of
Yakvenalex [24]

Explanation:

period of pendulum = time taken for 1 oscillation = time taken for 1 complete back and forth vibration

q1 ans is given in question its 1.5 sec

q2 ans is 1.5 sec longer than 1 sec period

4 0
2 years ago
Which law of motion accounts for the following statement? "A ball hit by a man travels faster than one hit by a boy."
kifflom [539]

A ball hit by a man is stronger than a ball hit by a man because the man uses more force when hitting the ball than the boy does.

5 0
3 years ago
Read 2 more answers
Given w= 4+,- 0.02 A=2.0+,-0.2 and 3.0+,-0.6 what is the value of w\ A y square
In-s [12.5K]

Explanation:

w = (4.52 ± 0.02) cm, x = ( 2.0 ± 0.2) cm, y = (3.0 ± 0.6) cm. Find z = x + y - w and its uncertainty.

z = x + y - w = 2.0 + 3.0 - 4.5 = 0.5 cm

Dz = Dx + Dy + Dw = 0.2 + 0.6 + 0.02 = 0.82 rounding to 0.8 cm

So z = (0.5 ± 0.8) cm

Solution with standard deviations, Eq. 1b, Dz = 0.633 cm

z = (0.5 ± 0.6) cm

Notice that we round the uncertainty to one significant figure and round the answer to match.

8 0
2 years ago
A car travels at an average speed of 60 km / h for 15 minutes. How far does the car travel in 15 minutes?
salantis [7]

Answer:

15km

Explanation:

Given parameters:

Average speed = 60km/hr

Time taken  = 15min

Unknown:

Distance  = ?

Solution:

The distance traveled can de derived using the expression below;

      Distance  = Average speed x time taken

Now let us convert the time to hr;

              60min = 1hr

              15min = \frac{15}{60}   = 0.25hr

Distance  = 60km/hr x 0.25hr  = 15km

6 0
2 years ago
Which statement best describes how scientists and engineers work together
alexandr402 [8]

Answer:

Option D: Engineers come up with scientific questions when they are

developing their design, and scientists do research to answer

them.

Explanation:

Normally, scientists work involves study of how nature works while engineers work is to create new things, such as websites, products e.t.c. Now, the objectives of engineers and scientists are different because they follow different processes while working to achieve their results. Scientists perform experiments using the scientific method which involves processes such as constructing hypothesis and testing with an experiment while, engineers usually follow the creativity based design engineering processes which involves developing of prototype solutions and testing those solutions.

Thus, it's clear that engineers deal with design while scientists deal with research.

The correct answer will be option D

6 0
3 years ago
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