1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Otrada [13]
3 years ago
10

A car starts from rest and accelerates uniformly over a time of 10.21 seconds for a distance of 210 m. Determine the acceleratio

n of the car.
Physics
1 answer:
uysha [10]3 years ago
6 0

Answer:

4.03 m/s/s

Explanation:

d=1/2 a t^2

210 = 1/2 a (10.21)^2

210 = 52.1 a

a = 4.03 m/s/s

You might be interested in
Stars and planets form when dust and gas from space is pulled together by.. what?
NemiM [27]

Answer:

gravity?

Explanation:

i dont have a lot of context but this is what i thought of so...

5 0
3 years ago
While excavating the tomb of Tutankhamen (d. 1325 BC), archeologists found a sling made of linen. The sling could hold a stone i
AleksAgata [21]

Answer:

L = 2.83 J.s

Explanation:

The formula for the angular momentum of the stone is given as follows:

L = mvr

where,

L = angular momentum of the stone  = ?

m = mass of the stone = 0.1 kg

v = linear velocity of the stone = rω

r = radius of circular path = 1.5 m

ω = angular speed of the stone = (2 rev/s)(2π rad/1 rev) = 4π rad/s

Therefore,

L = mvr = m(rω)r

L = mr²ω

using values, we get:

L = (0.1 kg)(1.5 m)²(4π rad/s)

<u>L = 2.83 J.s</u>

4 0
3 years ago
Dos masas de 8kg es tan unidas en el extremo de una varilla de aluminio de 400mm de longitud. La varilla está sostenida en su pa
enyata [817]

Answer:

The maximum frequency of revolution is 3.6 Hz.

Explanation:

Given that,

Mass = 8 kg

Distance = 400 mm

Tension = 800 N

We need to calculate the velocity

Using centripetal force

F=\dfrac{mv^2}{r}

Where, F= tension

m = mass

v= velocity

r = radius of circle

Put the value into the formula

800=\dfrac{8\times v^2}{200\times10^{-3}}

v^2=\sqrt{\dfrac{800\times200\times10^{-3}}{8}}

v=4.47\ m/s

We need to calculate the maximum frequency of revolution

Using formula of frequency

f=\dfrac{v}{2\pi r}

Put the value into the formula

f=\dfrac{4.47}{2\pi\times200\times10^{-3}}

f=3.6\ Hz

Hence, The maximum frequency of revolution is 3.6 Hz.

7 0
3 years ago
A circuit has a resistance of 10 Ω and current of 5 A. What is the voltage?<br><br>​
raketka [301]

Answer: 50 V

Explanation:

V=IR\\V=(5)(10)\\V=50

6 0
3 years ago
A Micro –Hydro turbine generator is accelerating uniformly from an angular velocity of 610 rpm to its operating angular velocity
Salsk061 [2.6K]

Answer:

Angular displacement of the turbine is 234.62 radian

Explanation:

initial angular speed of the turbine is

\omega_i = 2\pi f_1

\omega_1 = 2\pi(\frac{610}{60})

\omega_1 = 63.88 rad/s

similarly final angular speed is given as

\omega_f = 2\pi f_2

\omega_2 = 2\pi(\frac{837}{60})

\omega_2 = 87.65 rad/s

angular acceleration of the turbine is given as

\alpha = 5.9 rad/s^2

now we have to find the angular displacement is given as

\theta = \omega t + \frac{1}{2}\alpha t^2

\theta = (63.88)(3.2) + (\frac{1}{2})(5.9)(3.2^2)

\theta = 234.62 radian

3 0
3 years ago
Other questions:
  • Based on the image below, what would an observer on the nighttime side of Earth observe?
    9·2 answers
  • Explain why static charges do not build up on a conductor
    15·2 answers
  • A wave has a frequency of 240 Hz and a wavelength of 3.0m what is the speed of the wave
    11·2 answers
  • A motor attached to a 120 V/60 Hz power line draws an 8.40 A current. Its average energy dissipation is 850 W. How much series c
    10·1 answer
  • HELP: This is what I think can you correct me?
    15·2 answers
  • 4. Increasing the mass of this freight train will
    12·1 answer
  • How many seconds are there in 27.5 days?
    11·1 answer
  • Since the universe is infinite, the probability of events and reoccurrence is infinite. So that means that there is a chance, if
    15·1 answer
  • The amount of _______ that occurs when a sound wave encounters a barrier depends on the wave's length.
    14·1 answer
  • Please do as the instructions say. Will give brainliest
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!