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alekssr [168]
2 years ago
13

A turntable is designed to acquire an angular velocity of 32.4 rev/s in 0.5 s, starting from rest.

Physics
2 answers:
frozen [14]2 years ago
6 0

Answer:

not sure lol

Explanation:

ummmmmm look it up on peersanswer.com

horrorfan [7]2 years ago
3 0
Well, the acceleration is the difference of speeds divided by the time period. \frac{32.4}{0.5}=64.8rev/s^2.
One rev/s is 2\pi rad/s^2, so our final result is 64.8*2\pi=407.15rad/s^2.
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An object of mass 10kg is accelerated upward at 2m/s^2. What force is required
arsen [322]
Ya the equation F=MA
So you do mass x acceleration
10 x 2 = 20
Force is measured in Newtons which has a unit of N
So the answer is = 20N

Hope that is helpful
7 0
3 years ago
A ball has a diameter of 3.77 cm and average density of 0.0839 g/cm3. What force is required to hold it completely submerged und
mestny [16]

Answer:

0.25 N

Explanation:

The density of the ball (\rho_b) = 0.0839 g/cm³ = 83.9 kg/m³

The density of water (\rho_w) = 1000 kg/m³

diameter = 3.77 cm = 0.0377 m

radius of ball = 0.0377/2 = 0.01885 m

The volume (V) = \frac{4}{3} \pi r^3=\frac{4}{3}*\pi*0.01885^3=2.8*10^{-5}\ m^3

Let us assume the acceleration due to gravity (g) = 9.8 m/s²

Hence:

The force is required to hold it completely submerged under water (F) is:

F=\rho_w Vg-\rho_b Vg=1000*(2.8*10^{-5})*9.81-83.9*(2.8*10^{-5})*9.81\\\\

F = 0.25 N

7 0
3 years ago
Tell me the max amount you should owe on this card.
olga nikolaevna [1]

Answer:

the max is 2,500 or less

Explanation:

because you cant owe anymore

8 0
2 years ago
what is the answer to the question "Two boys of equal mass go up to the first floor of a building. Boy A takes the stairs, boy B
weeeeeb [17]

Answer:

e

Explanation:e

4 0
3 years ago
Which type of device enables its users to see around corners?
Dmitriy789 [7]

Answer:

We can use optical fibers.

Explanation:

The optical fibers are the optical devices which is based on the total internal reflection.

The optical fiber has two layers, one is called core and the other is called cladding.

The refractive index of core is more than the cladding.

As a ray of light falls on the core at more than the critical angle for that pair of media(core and cladding), it suffers the total internal reflection at the interface.

5 0
3 years ago
Read 2 more answers
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