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Mazyrski [523]
3 years ago
5

You decide you want to carry a boulder home from the beach it is 30 centimeter on each side. It is made of granite, which has a

typical density of 2.8 g/cm3. How much will this boulder
Physics
1 answer:
HACTEHA [7]3 years ago
7 0
Volume = 30*30*30 = 27000 cm^3
density = 2.8 g/cm^3

mass = 27000*2.8 = 75600g = 75.6 kg
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Two parallel plates of area 0.155 m2<br> are separated by 0.00100 m. What<br> is their capacitance?
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Answer:

1.37 x 10^-9

Explanation:

Trust me bro.

4 0
3 years ago
A 60 cm diameter wheel accelerates from rest at a rate of 7 rad/s2. After the wheel has undergone 14 rotations, what is the radi
Mamont248 [21]

Answer:

a=368.97\ m/s^2

Explanation:

Given that,

Initial angular velocity, \omega=0

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Rotation, \theta=14\ rotation=14\times 2\pi =87.96\ rad

Let t is the time. Using second equation of kinematics can be calculated using time.

\theta=\omega_it+\dfrac{1}{2}\alpha t^2\\\\t=\sqrt{\dfrac{2\theta}{\alpha }} \\\\t=\sqrt{\dfrac{2\times 87.96}{7}} \\\\t=5.01\ s

Let \omega_f is the final angular velocity and a is the radial component of acceleration.

\omega_f=\omega_i+\alpha t\\\\\omega_f=0+7\times 5.01\\\\\omega_f=35.07\ rad/s

Radial component of acceleration,

a=\omega_f^2r\\\\a=(35.07)^2\times 0.3\\\\a=368.97\ m/s^2

So, the required acceleration on the edge of the wheel is 368.97\ m/s^2.

6 0
3 years ago
The low-pressure area near Earth’s equator is filled by cool air moving in from ________. Btw this is science
bonufazy [111]

Answer:

the north and south pole

Explanation:

this should be the correct answer

5 0
2 years ago
The landing of a spacecraft is cushioned with the help of airbags. During its landing on Mars, the velocity of downward fall is
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You can use the impulse momentum theorem and just subtract the two momenta.
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5 0
3 years ago
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If a car travels 40 km/hr for hours how far has it traveled
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It depends on how many hours!
1 hour = 40km
2 hours = 80km
8 0
3 years ago
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