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3 years ago

I'm bad at physics help? cheak the pic ;-;

Physics

1 answer:

Anon25 [30]3 years ago

3 0

Answer:

It would be λ=V/f

Explanation:

λ = wavelength

V = velocity

f = frequency

The equation for a wavelength is velocity over frequency, therefore the answer would be λ=V/f.

Good luck with your physics!

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What is the net force acting on a golf car traveling at a constant speed of 5 mph?

MAVERICK [17]

Technically, we can't answer the question with the given information.
Even though the cart's speed is constant, it may be turning an corner,
or driving along a curved path. If it's not driving in a straight, then there
must be some force acting on it.

If the cart IS driving in a straight line, AND its speed is constant, then
there can't be any net force acting on it. In that case, the correct choice
is ' B '. (I'm sure this is right IF the cart is driving in a straight line.)

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3 years ago

Suppose a truck has a momentum of 40,120 kg • and a mass of 1,180 kg. what is the truck’s velocity?

klasskru [66]

The momentum of an object is the product between the mass m of the object and its velocity:
$p=mv$
The truck in our problem has momentum equal to
$p=40120 kg m/s$
and a mass of
$m=1180 kg$
so, if we re-arrange the previous formula, we can use these data to find the velocity of the truck:
$v= \frac{p}{m}= \frac{40120 kg m/s}{1180 kg}=34 m/s$

5 0

3 years ago

Read 2 more answers

NEED ANSWER ASAP what are the factors that affect the strength of a frictional force?

ololo11 [35]

It's not the second one since color has nothing to do with force. Also the third one isn't a factor since buoyant forces is the upward force of caused by fluid that opposes the object entering the liquid. The acceleration of the object and the mass of an object and how rough the surface are the only two factors in all the options.

8 0

4 years ago

What should you do if...

Hunter-Best [27]

Answer:

3. you need to ask your available lab instructors what to do.

4. You immediately have to drop down your cloth and roll it to extinguish the fire or move to the emergency shower if available

5. You have too keep calm and report to the lab instructor but do no shout.

6. Move immediately to the eye rinse basin if available and wash your eyes gently and thoroughly

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3 years ago

Wagon wheel. While working on your latest novel about settlers crossing the Great Plains in a wagon train, you get into an argum

OverLord2011 [107]

Answer:

I = 16.7kgm²

Explanation:

Since, Torque is given by,

\tau = F*r = I*\alpha

here, I = Moment of inertia = ??

\alpha = angular acceleration of wheel = a/r

F = tangential tension acting on the wheel = T

a = acceleration of bag of sand = 2.95 m/s^2

r = radius of wheel = d/2 = 120/2 = 60 cm = 0.60 m

from force balance on sand bag,

mg - T = m*a

T = m*(g-a)

m = mass of sand bag = 20 kg

So, I = T*r/\alpha = m*(g-a)*r/(a/r)

Using known values:

I = 20*(9.81 - 2.95)*0.60/(2.95/0.60) = 16.74

I = 16.7 kgm² = Moment of inertia of wheel experimentally

also, Moment of inertia of wheel theoretically(I') = M*r²

given, M = mass of wheel = 70 kg

I' = 70*0.60²= 25.2 kgm² = Moment of inertia of wheel theoretically

7 0

3 years ago

I'm bad at physics help? cheak the pic ;-;​

I'm bad at physics help? cheak the pic ;-;