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suter [353]
3 years ago
5

Which of the following was not first proposed by Charles Darwin?

Physics
1 answer:
ira [324]3 years ago
6 0

Answer:

C. Struggle for existence

Explanation:

Have a great day

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The double inclined plane supports two blocks A and B, each having a weight of 10 lb. If the coefficient of kinetic friction bet
Vladimir79 [104]

Answer:

Explanation:

Left block is on surface with higher inclination so it will go down . If T be tension

For motion of block A ,

net force = mgsin60 - (T + mg cos 60 x μ ) , μ is coefficient of friction .

ma =  mgsin60 - T -  mg cos 60 x .1

10a = 277.13  - T - 16

= 261.13 - T

T = 261.13 - 10a

For motion of block B

T - mg sin30 - mgcos30 x μ = ma

T- 160 - 27.71 = 10 a

261.13 - 10a - 160 - 27.71 = 10a

73.42 = 20a

a = 3.67 ft / s²

common acceleration = 3.67 ft / s²

8 0
4 years ago
Can someone check my answers pls
o-na [289]
Hmmm... I’d say that’s pretty accurate. Good job! Well wishes on whatever it is you’re doing.
7 0
4 years ago
What is the acceleration of a vehicle that goes from 70 m/s to a stop in 35 s?
belka [17]
U=70 , v= 0, t=35, a=?
v=u+at
0=70+a(35)
-70=35a
a=-2m/s^2
Decelerate 2ms^-2 or acceleration is -2ms^-2
7 0
3 years ago
Ok, what determines the color of light?
gladu [14]

Explanation:

C . frequency

is the correct answer I think .

7 0
3 years ago
Read 2 more answers
A rifle bullet leaves the barrel at 1500 meters per second. If it does not slow down or hit anything, how far can it travel in h
galben [10]

Since we are dividing a second in 2, we can simply divide the amount of meters by 2.

1500/2=750

It travels 750 meters in half a second.

Hope this helps!


7 0
3 years ago
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