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Ilia_Sergeevich [38]
4 years ago
5

Which statement best describes how scientists and engineers work together in the research and development cycle? A. Scientists t

est designs made by engineers and then use the results to improve the designs. B. Scientists develop a new technology, and then engineers test it by doing experiments. C. Engineers come up with scientific questions when they are developing their design, and scientists do research to answer them. O D. Engineers make a scientific discovery, and then scientists perform research to verify it. please help asap if you can​
Physics
2 answers:
Pavlova-9 [17]4 years ago
7 0

Answer:

c

Explanation:

kiruha [24]4 years ago
5 0

C. Engineers come up  with  scientific questions when they are developing their design, and scientists do research to answer them

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How much force is needed to stop a 50 kg gymnast if he decelerates at 25 m/s^2
vlada-n [284]
The force can be calculated by multiplying the mass of the gymnast with her acceleration.

Force = 50 kg × 25 m/s2
Force = 1250 N

A force of at least 1250 N can stop the 50-kg gymnast.

I hope I was able to answer your question. Have a good day.
3 0
3 years ago
Communications satellites transmit UV waves
balandron [24]
If any of them do, it's not intentional, that is, it's not part of
the design of the communications satellite.

Communications satellites communicate with their customers
and their control centers on the ground using plain old UHF radio
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6 0
3 years ago
If a FM radio station broadcasts at 80. 3 MHz (megahertz), what is its wavelength in m (speed of light 3. 0 x 108 m/s)
hammer [34]

Answer:

Wavelength = 3.74 m

Explanation:

In order to find wavelength in "metres", we must first convert megahertz to hertz.

1 MHz = 1 × 10⁶ Hz

80.3 Mhz = <em>x</em>

<em>x </em>= 80.3 × 1 × 10⁶ = 8.03 × 10⁷ Hz

The formula between wave speed, frequency and wavelength is:

v = fλ  [where v is wave speed, f is frequency and λ is wavelength]

Reorganise the equation and make λ the subject.

λ = v ÷ f

λ = (3 × 10⁸) ÷ (8.03 × 10⁷)

λ = 3.74 m [rounded to 3 significant figures]

8 0
3 years ago
Which of these is not measured in hertz? Select all that apply.
Wittaler [7]
A). period is time

b). amplitude can be almost anything that waves . . . length, voltage, pressure, current etc.
But not hertz.

c). frequency ... "oftenness ... reciprocal time. the only item on this list that CAN be measured in Hertz.

d). wavelength ... length units
4 0
3 years ago
Read 2 more answers
As a clump of interstellar gas contracts to become a main-sequence star, its changing position on the H-R diagram tells us _____
Stels [109]

Answer:

how its outward appearance is changing

Explanation:

H-R diagram is a fundamental tool used to classify stars. The position of stars on the H-R diagram is dependent on its luminosity and temperature.  

The position of the star is represented by its outward appearance specially the color. The hottest and brightest the star, the more it lies between the red and blue color range.  

The cooler stars lie on the right side of the H-R diagram while the hot stars lie on the left side of the H-R diagram.  

6 0
3 years ago
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