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Basile [38]
3 years ago
11

A 1300 kg car traveling with a speed of 3.5 m/s executes a turn with a 8.5 m radius of curvature.

Physics
1 answer:
Y_Kistochka [10]3 years ago
7 0

Answer:

1.4 m/s/s (2.s.f)

Explanation:

The formula for centripetal acceleration is:

a=\frac{v^{2} }{r}, where v is velocity and r is the radius.

In the question we are given the information that the car has a mass of 1300kg, a velocity of 2.5m/s, and a turn radius of 8.5m which are all the values we need. Therefore we can simply substitute in the values to solve the question:

a=\frac{3.5^{2} }{8.5} \\a=1.4

Therefore the centripetal acceleration of the car is 1.4m/s/s. (2.s.f)

Hope this helped!

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The water level in a vertical glass tube 1.00 m long can be adjusted to any position in the tube. A tuning fork vibrating at 653
konstantin123 [22]

Answer:

4

Explanation:

Given that length of tube,L=1 m

Frequency ,f=653 Hz

We know that

V= f λ

4 L = nλ

So we can say that

L_n=\dfrac{nV}{4f}

Where n is the odd number .

Here V=343 m/s

a)

For n=1:

L_1=\dfrac{343}{4\times 653}

L_1=0.13\ m

For n=3:

L_3=\dfrac{3\times 343}{4\times 653}

L_3=0.39

For n=5:

L_5=\dfrac{5\times 343}{4\times 653}

L_5=0.65

For n=7:

L_7=\dfrac{7\times 343}{4\times 653}

L_7=0.91

So total positions will be 4.

6 0
3 years ago
Need an answer in Meters
chubhunter [2.5K]

Answer:

• let's first get time

{ \rm{s = ut +  \frac{1}{2}g {t}^{2}  }} \\  \\ { \rm{78.4 = 30t + 5 {t}^{2} }} \\  \\ { \rm{ {t}^{2}  + 6t - 15.68 = 0}} \\  \\ { \rm{time  \approx \: 2 \: seconds}}

• let's find horizontal displacement

{ \rm{s = ut +  \frac{1}{2}g {t}^{2}  }} \\  \\ { \rm{s = (30 \times 2) \times ( \frac{1}{2} \times 0 \times  {2}^{2})  }} \\  \\ { \rm{displacement = 60 \: meters}}

  • g is acceleration due to gravity [ vertically: g is 10 m/s². horizontally: g is 0 ]
6 0
3 years ago
A 0.0780 kg lemming runs off a
Sindrei [870]

Answer:

0.913

Explanation:

k.e=1/2mv square

k.e=1/2×0.078g×23.4256m/s square

k.e=0.913J

3 0
3 years ago
What is the observed frequency of a siren with a frequency of
Yakvenalex [24]

Answer: The observed frequency is 518.6 Hz

Explanation:

By the Doppler Effect, we know that:

f' = ((v + v0)/(v - vs))*f

where f' is the perceived frequency.

v is the velocity of the wave, in this case 330m/s

v0 is the velocity of the receptor, in this case 0m/s

vs is the velocity of the source, in this case -50m/s (the minus sign is because it is coming thowards us)

f is the original frequency, f = 440hz.

then we have:

f' = 440hz*(330m/s)/(330m/s - 50m/s) = 518.6 Hz

7 0
3 years ago
A squirrel has a mass of .5kg what is it’s weight ?
frosja888 [35]
Weight is mass times gravitational acceleration. Without a specific location, Earths average gravitational acceleration is 9.807.
So .5x9.8.07= weight
The answer is 4.9035 newtons
7 0
3 years ago
Read 2 more answers
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