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3 years ago

If an object has no acceleration, can you conclude that no forces are exerted on it

1 answer:

3 0

No. It has no acceleration, which just means that the forces acting on it are equal and opposite, not that there are no forces exerted on it.

But if you're talking about the resulting Net Force, then yes you can conclude there is no Net Force acting on an object with no acceleration.

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What direction does a S wave move

noname [10]

Answer:

As they travel through rock, the waves move tiny rock particles back and forth -- pushing them apart and then back together -- in line with the direction the wave is traveling. These waves typically arrive at the surface as an abrupt thud. Secondary waves (also called shear waves, or S waves) are another type of body wave

Explanation:

Please mark me as brainliest!! Hope I helped

7 0

3 years ago

Calculate the current passing through a conductor of resistance 4ohms. If a potential difference of 15V its ends______

statuscvo [17]

Explanation:

current = velocity/resistance

I = V/R

15/4

current = 3.75A

hope this helps...

6 0

3 years ago

If you and 3 friends are playing tug of war and are pulling with a force of 35 N and your teammate with 37 N, while your opponen

mash [69]

72N and 75N. no. hope it helps you

3 0

4 years ago

Starting from rest, your friend dives from a high cliff into a deep lake below, yelling in excitement at the thrill of free-fall

Olegator [25]

Answer:

2 seconds

Explanation:

f = Frequency of yell = 919 Hz

$\Delta f$ = Shifted frequency = 55.9 Hz

v = Speed of sound in air = 342 m/s

$v_r$ = Velocity of friend

a = Acceleration due to gravity = 9.81 m/s²

From the Doppler shift formula we have

$\dfrac{f+\Delta f}{f}=\dfrac{v}{v-v_r}\\\Rightarrow v_r=v-\dfrac{vf}{f+\Delta f}\\\Rightarrow v_r=342-\dfrac{342\times 919}{919+55.9}\\\Rightarrow v_r=19.61\ m/s$

The velocity of the my friend is 19.61 m/s

$v=u+at\\\Rightarrow t=\dfrac{v-u}{a}\\\Rightarrow t=\dfrac{19.61-0}{9.8}\\\Rightarrow t=2\ s$

The time my friend is in the air is 2 seconds

7 0

3 years ago

in a class where the number of girls is 36% of the total number,there are 48 boys.how many students are there in the class?

Pavlova-9 [17]

Answer:

There are 75 people in the class. The number of boys is 48 and the number of girls is 27. The percentage of girls is 36% of 75.

Explanation:

3 0

3 years ago