a bowling ball has a mass of 6 kg what happens to its momentum when its speed increases from 2 m/s to 4 m/s

The Moon orbits the Earth in an approximately circular path. The position of the moon as a function of time is given by: x(t) =

Aleks [24]

Answer: Average Velocity = - 643.42 i + 512.66 j m/s

Magnitude = 822.7 m/s

Direction = 141.45°

Explanation:

r = 3.84 x 10^8 m

w = 2.46 x 10^-6 rad/s

Formula for Average velocity = displacement / time

at t = 0

x(0) = r

y(0) = 0

at t = 8.45 days

= 8.45 x 24 x 3600 s =730080 sec

w t = 2.46 x 10^-6 x 730080 = 1.80 rad Or 102.90°

xf = r cos(w t) = - 0.2233r

yf = r sin(w t) = 0.9747r

Displacement = (xf - x0)i + (yf - y0)j = -1.2233r i + 0.9747r j

<v> = dispalcement / t = (-1.2233r i + 0.9747r j ) / (730080 s )

= - 643.42 i + 512.66 j m/s

Magnitude

= sqrt(643.42^2 + 512.66^2)

= 822.7 m/s

Direction

= 180 - tan^-1(512.66 / 643.42)

= 141.45°

8 0

3 years ago

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Calculate the linear momentum per photon,energy per photon, and the energy per mole of photons for radiation of wavelength; (a)

LuckyWell [14K]

Answer:

The detailed explanations is attached below

Explanation:

What is applied is the De brogile equation and the equation showing a relationship between Energy, speed of light and wavelength.

The explanation is as attached below.

8 0

3 years ago

5. Why are ceramics and plastics good insulators?

jeka57 [31]

Answer:

Here

Explanation:

They don't have free electrons moving around (delocalised electrons) so they can't conduct heat and electricity which gives them a property of good insulators. The insulators stop us having an electric shock because they don't conduct electricity as we use them to insulate metal wires and other metallic things. can i have brainliest now pls!

3 0

3 years ago

Starting from rest, a 75.0-kg snowboarder slides straight down a 115-m slope in 6.6 s. If the slope is a 35°

Likurg_2 [28]

The acceleration of the snowboarder is $5.6 m/s^2$ down along the incline

Explanation:

To find the acceleration of the snowboard, we have to analyze the forces acting along the direction parallel to the incline.

There is only one force acting in this direction, and it is the component of the weight parallel to the incline, given by

$mg sin \theta$

where

m = 75.0 kg is the mass of the man

$g=9.8 m/s^2$ is the acceleration of gravity

$\theta=35^{\circ}$ is the angle of the incline

Substituting, we find that the net force along the incline is:

$F=(75.0)(9.8)(sin 35^{\circ})=421.6 N$

According to Newton's second law, the net force on the snowboard is equal to the product between his mass and his acceleration:

$F=ma$

where a is the acceleration. Therefore, solving for a, we find

$a=\frac{F}{m}=\frac{421.6}{75}=5.6 m/s^2$

And the direction of this acceleration is down along the incline.

Learn more about acceleration and Newton's second law:

brainly.com/question/11411375

brainly.com/question/1971321

brainly.com/question/2286502

brainly.com/question/2562700

#LearnwithBrainly

8 0

3 years ago

How are step-up transformers used in the transmission of electrical energy

bekas [8.4K]

Step-up transformers are used at power stations to produce the very high voltages needed to transmit electricity through the National Grid power lines. These high voltages are too dangerous to use in the home, so step-down transformers areused locally to reduce the voltage to safe levels.

5 0

4 years ago