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2 years ago

What is the scientific definition of tracked?

Physics

1 answer:

dexar [7]2 years ago

8 0

To find or discover by investigation?

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At time t=0 a grinding wheel has an angular velocity of 28.0 rad/s . It has a constant angular acceleration of 35.0 rad/s2 until

notsponge [240]

Answer:

a). $x_{t}=583.3rad$

b). $t_{total}=10.52s$

c). $a=12.62 \frac{rad}{s^2}$

Explanation:

The angular acceleration is constant so we can use the formulas of uniform motion with the model of angular acceleration

a).

$x_{r}=x_{i}+v_{i}+\frac{1}{2}a_{a}*t^2$

$x_{r}=0+28.0\frac{rad}{s}*2.20s+\frac{1}{2}*35.0\frac{rad}{s^2}*2.20s$

$x_{r}=146.3rad$

so the total angle between t=0 and the time it stopped is

$x_{t}=146.3rad+437rad=583.3rad$

b).

$w_{f}=w_{o}+a*t$

$w_{f}=28.0rad/s+35rad/s^2*2.2s=105rad/s$ = $w_{o}$

$x_{t}-x_{r}=\frac{1}{2}*(w_{o}-w_{f})*t$

$583.3-146.3=\frac{1}{2}*(105-0)*t$

$t=\frac{437rad}{105\frac{rad}{s}}=8.32s$

$t_{total}=8.32+2.2=10.52s$

c).

$w_{f}=w_{o}+a*t$

$0=105 rad/s+a*8.32s$

$a=\frac{105 rad/s}{8.32s}$

$a=12.62 \frac{rad}{s^2}$

7 0

3 years ago

Burl the painter weighs 600 Newtons. He stands in the exact middle of his stage. There are two scale readings attached to the tw

chubhunter [2.5K]

Answer:

T = 300 N

Explanation:

As we know that the painter is standing at the middle of the scaffold

So here the two ropes will exert same tension on the scaffold

So we will have

$T_1 + T_2 = W$

also we know

$T_1 = T_2$

so we will have

$2T = W$

$T = \frac{W}{2}$

so tension is half of the weight in both the strings

So it is

T = 300 N

6 0

2 years ago

Which reverses the flow of current through<br> an electric motor?

Gennadij [26K]

Answer:

a commutator

Explanation:

6 0

2 years ago

A construction worker puts 20J of energy in to one strike of his hammer on the head of a nail. The energy transferred to driving

Slav-nsk [51]

Answer:

efficiancy=40 percent

Explanation:

efficiency=energy output/energy input×100

efficiancy=8J/20J×100

efficiancy=0.4×100

efficiancy=40 percent

Mark brianliest if my answer suit your question..

3 0

2 years ago

Read 2 more answers

A rock is at the top of a 20 meter tall hill. The rock has a mass of 10kg. How much potential energy does it have?

Mnenie [13.5K]

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-Brainly support team (Klara academic DEPT.)Spam words mean team is having trouble determining the question CONTACT For support.

7 0

3 years ago