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2 years ago

10

What is a period in physics?

1 answer:

Citrus2011 [14]2 years ago

3 0

Answer:

The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years. The period of orbit for the Earth around the Sun is approximately 365 days; it takes 365 days for the Earth to complete a cycle.

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Having _________is the most obvious difference between a eukaryotic and a prokaryotic cell, but there are other differences as w

8_murik_8 [283]

Answer:

1. d. a nucleus

2. b. Membrane-bound organelles

3. c. ten time smaller

4. b. animal cell

5. c. Bacteria

Explanation:

Hope this helps... :)

7 0

3 years ago

Water at the top of Horseshoe Falls (part of Niagara Falls) is moving horizontally at 9.2 m/s as it goes off the edge and plunge

dangina [55]

Water at the top of Horseshoe Falls (part of Niagara Falls) is moving horizontally at 9.2 m/s, the angle with respect to the vertical is mathematically given as

$\theta=15.93$

<h3>What angle with respect to the vertical is the falling water moving as it enters the pool?</h3>

Generally, the equation for velocity is mathematically given as

V^2=u^2+2as

Therefore

V^{2}=0+2(9.81)(53)

V=32.2m/s

In conclusion, The angle

$\theta =tan^{-1}\frac{(9.20m/s)}{(32.23m/s)}$

$\theta=15.93$

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4 0

2 years ago

At time t=0 a grinding wheel has an angular velocity of 26.0 rad/s. It has a constant angular acceleration of 25.0 rad/s^2 until

Zolol [24]

Angle turned by the wheel is given by the kinematics as

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

now here we know that

$\omega = 26 rad/s$

$\alpha = 25 rad/s^2$

t = 2.50 seconds

$\theta = 26(2.50) + \frac{1}{2}(25)(2.50)^2$

$\theta = 143.1 rad$

So here total angle that the wheel turn is given as

$\theta = 143.1 + 440 = 583.1 rad$

Speed of the wheel after 2.5 s

$\omega = \omega_0 + \alpha t$

$\omega = 26 + (25)(2.5)$

$\omega = 88.5 rad/s$

now angular deceleration is given as

$\alpha_1 = \frac{\omega^2 - \omega_0^2}{2\theta}$

$\alpha_1 = \frac{0 - 88.5^2}{2(440)}$

$\alpha_1 = -8.9 rad/s^2$

time taken to stop

$t = \frac{\omega - \omega_0}{\alpha}$

$t = \frac{0 - 88.5}{-8.9} = 9.94 s$

now total time is given as

$T = 2.50 + 9.94 = 12.44 s$

5 0

3 years ago

Read 2 more answers

Metamorphic rocks are made from

katrin [286]

D! It can be made from all.

3 0

3 years ago

Read 2 more answers

. Calculate the work done by an elevator as it lifts 12 occupants up 21 floors (76.8 meters) at a constant speed. The average ma

ratelena [41]

Answer:

W = 4832

Explanation:

Given:

Force = 62.8 Kg

Distance = 76.8 m

Find :

work done = ?

Formula :

W = Fd

Solution:

W = Fd

W =(62.8 kg)(76.8 m)

= 4832 J

6 0

3 years ago