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laiz [17]
2 years ago
14

Science questions!! Please help!!

Physics
1 answer:
kondor19780726 [428]2 years ago
7 0

Answer:

1. b

2. c

3. b

4. a

5. a

6. c

7. c

8. d

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evablogger [386]

Answer:

b

Explanation:

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3 years ago
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The answer for this would be B!!
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What do MRI and ultrasound have in common as diagnostic imaging techniques? Check all that apply.
Gennadij [26K]

Answer:

low risk for tissue damage

uses radio waves

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An object accelerates in a direction that is always perpendicular to its motion.
anzhelika [568]
The object will not be able to accelerate perpendicular to direction of motion
7 0
3 years ago
Please help answer question​
nika2105 [10]

Answer:

C = 1.01

Explanation:

Given that,

Mass, m = 75 kg

The terminal velocity of the mass, v_t=60\ m/s

Area of cross section, A=0.33\ m^2

We need to find the drag coefficient. At terminal velocity, the weight is balanced by the drag on the object. So,

R = W

or

\dfrac{1}{2}\rho CAv_t^2=mg

Where

\rho is the density of air = 1.225 kg/m³

C is drag coefficient

So,

C=\dfrac{2mg}{\rho Av_t^2}\\\\C=\dfrac{2\times 75\times 9.8}{1.225\times 0.33\times (60)^2}\\\\C=1.01

So, the drag coefficient is 1.01.

4 0
2 years ago
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