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pentagon [3]
2 years ago
14

Choose all the answers that apply.

Physics
2 answers:
Simora [160]2 years ago
6 0
5 1 4 are the answers
kozerog [31]2 years ago
4 0

Answer:

The answers are 1.) has magnitude 4.) equals velocity times acceleration and lastly 5.)  is measured in m/s2 Hope this helps :D

Explanation:

You might be interested in
You have a grindstone (a disk) that is 95.2 kg, has a 0.399 m radius, and is turning at 93 rpm, and you press a steel axe agains
olya-2409 [2.1K]

Answer:

angular acceleration is -0.2063  rad/s²

Explanation:

Given data

mass m = 95.2 kg

radius r = 0.399 m

turning ω = 93 rpm

radial force N  = 19.6 N

kinetic coefficient of friction  μ = 0.2

to find out

angular acceleration

solution

we know frictional force that is = radial force × kinetic coefficient of friction

frictional force = 19.6 × 0.2

frictional force = 3.92 N

and

we know moment of inertia  that is

γ =  I ×α = frictional force × r

so

γ  = 1/2 mr²α

α  = -2f /mr

α  = -2(3.92) /95.2 (0.399)

α  = - 7.84 / 37.9848 = -0.2063

so angular acceleration is -0.2063  rad/s²

3 0
3 years ago
Two air track carts move along an air track towards each other. Cart A has a mass of 450 g and moves toward the right with a spe
ra1l [238]

Answer:

0.465 kgm/s

Explanation:

Given that

Mass of the cart A, m1 = 450 g

Speed of the cart A, v1 = 0.85 m/s

Mass of the cart B, m2 = 300 g

Speed of the cart B, v2 = 1.12 m/s

Now, using the law of conservation of momentum.

It is worthy of note that our cart B is moving in opposite directions to A

m1v1 + m2v2 =

(450 * 0.85) - (300 * 1.12) =

382.5 - 336 =

46.5 gm/s

If we convert to kg, we have

46.5 / 100 = 0.465 kgm/s

Thus, the total momentum of the system is 0.465 kgm/s

6 0
3 years ago
Which conversion can take place in a transformer
Naddik [55]

Answer:

D. A lower Voltage into a higher

5 0
3 years ago
Which is an example of convection currents
Viefleur [7K]

Answer:

A radiator emitting warm air and drawing in cool air is an example of convection current

Explanation:

I am guessing you meant "A radiator emitting warm air and drawing in cool air'

8 0
2 years ago
Read 2 more answers
A
OleMash [197]

Answer:

R= 5.4 ohms

Explanation:

Given that

V= 9 V

Power ,P= 15 W

Lets take resistor resistance = R

We know that Power given as

P=\dfrac{V^2}{R}

V=Voltage

P=Power

R=Resistance

R=\dfrac{V^2}{P}

Now by putting the all the values in the above equation

R=\dfrac{9^2}{15}

R= 5.4 ohms

Therefore the resistance of the resister will be 5.4 ohms.

7 0
3 years ago
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