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3 years ago

Brainliest for correct answer :)

Physics

2 answers:

kiruha [24]3 years ago

8 0

Answer:

Explanation:

melisa1 [442]3 years ago

5 0

Answer:

B- They both have travelled equal distances in 7 minutes

Hope this helps!

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You set a small eraser at a distance of 0.27 m from the center of a turntable you find in the attic and establish that when the

Licemer1 [7]

Answer with Explanation:

We are given that

Distance,r=0.27 m

Tangential speed=v=0.49 m/s

a.Angular speed , $\omega=\frac{v}{r}$

Using the formula

$\omega=\frac{0.49}{0.27}=1.8 rad/s$

$\omega=\frac{2\pi}{T}$

$T=\frac{2\pi}{\omega}$

Time period, $T=\frac{2\pi}{1.8}=3.49 s$

b.Amplitude,A=Distance of small eraser from the center of a turnable =0.27 m

c.Maximum speed, $V_{max}=0.49 m/s$

d.Maximum acceleration= $a=r\omega^2=0.27(1.8)^2=0.87 m/s^2$

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4 years ago

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After a projectile is fired into the air, what is the acceleration in the x-direction? (Assume no air resistance.)

Gre4nikov [31]

Without air resistance, there is no horizontal force on the projectile,
so it has no horizontal acceleration. The answer is "zero".

4 0

3 years ago

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To see the acceleration graph, go to the x vs. t graph in “Frame 3” and change the vertical axis to ax. Now step through the mov

brilliants [131]

Answer:

The ax versus t graph stays in the range of 2.5 to 3 m/s2 for the first 2 seconds or so, and then it drops quickly to just below 0 m/s2. This corresponds well with the slope of the vx graph: relatively constant positive slope for the first 2.5 seconds, and then zero (and even negative) slope afterwards.

Explanation: Edmentum

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2 years ago

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It is known that the gravitational force of attraction between two alpha particles is much weaker than the electrical repulsion.

natali 33 [55]

Answer:

The ratio of gravitational force to electrical force is 3.19 x 10^-36

Explanation:

mass of an alpha particle = 6.64 x $10^{-27}$ kg