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
natima [27]
3 years ago
5

heres free wallpapers and pnts! :)) (phone and PC and chromebook wallpapers) (credits to those who made them !)

Physics
1 answer:
stiks02 [169]3 years ago
8 0

Answer: :DD

Explanation:

You might be interested in
PLEASE PLEASE HELP ME!!!!!!!!!!
marysya [2.9K]
373 kelvin = 99.9 Celsius. Round makes it 100. 373 kelvin also equals 212 Fahrenheit so the correct answer is A.
<span />
8 0
3 years ago
Which group of elements are shiny, opaque, and have a high melting point?
vlabodo [156]
The answer is A. Metals
3 0
3 years ago
A merry-go-round with a rotational inertia of 600 kg m2 and a radius of 3. 0 m is initially at rest. A 20 kg boy approaches the
Margaret [11]

Hi there!

\boxed{\omega = 0.38 rad/sec}

We can use the conservation of angular momentum to solve.

\large\boxed{L_i = L_f}

Recall the equation for angular momentum:

L = I\omega

We can begin by writing out the scenario as a conservation of angular momentum:

I_m\omega_m + I_b\omega_b = \omega_f(I_m + I_b)

I_m = moment of inertia of the merry-go-round (kgm²)

\omega_m = angular velocity of merry go round (rad/sec)

\omega_f = final angular velocity of COMBINED objects (rad/sec)

I_b = moment of inertia of boy (kgm²)

\omega_b= angular velocity of the boy (rad/sec)

The only value not explicitly given is the moment of inertia of the boy.

Since he stands along the edge of the merry go round:

I = MR^2

We are given that he jumps on the merry-go-round at a speed of 5 m/s. Use the following relation:

\omega = \frac{v}{r}

L_b = MR^2(\frac{v}{R}) = MRv

Plug in the given values:

L_b = (20)(3)(5) = 300 kgm^2/s

Now, we must solve for the boy's moment of inertia:

I = MR^2\\I = 20(3^2) = 180 kgm^2

Use the above equation for conservation of momentum:

600(0) + 300 = \omega_f(180 + 600)\\\\300 = 780\omega_f\\\\\omega = \boxed{0.38 rad/sec}

8 0
2 years ago
3kg of water at 80degree celcius is added to 8 kg of water at 25 degree celcius. find the temperature of final mixture provided
Nitella [24]

Answer:

hope fully it help s

3 0
2 years ago
Proved that<br>V = u+at<br>​
kondaur [170]

Answer:

\sf Proof \ below

Explanation:

We know that acceleration is change in velocity over time.

\sf a=\frac{\triangle v}{t}

\sf a=\frac{v-u}{t}

v is the final velocity and u is the initial velocity.

Solve for v.

Multiply both sides by t.

\sf at=v-u

Add u to both sides.

\sf at + u=v

3 0
3 years ago
Read 2 more answers
Other questions:
  • 9: A post is being driven into the ground. The first strike drives the post 25 inches into the ground. Each additional strike dr
    5·1 answer
  • How much work is required to lift an object with a mass of 5.0 kilograms to a height of 3.5 meters?
    15·2 answers
  • 1)which of the following is not a benefit of stretching
    12·1 answer
  • A 75 g, 30 cm long rod hangs vertically on a friction less, horizontal axel passing through the center. A 10 g ball of clay trav
    15·1 answer
  • which tool would you use to measure the amount of rainfall? a. graduated cylinder b. stopwatch c. scale d. thermometer
    11·2 answers
  • Erica (38 kgkg ) and Danny (46 kgkg ) are bouncing on a trampoline. Just as Erica reaches the high point of her bounce, Danny is
    8·1 answer
  • The ultrasound is reflected from the seafloor back to the submarine.
    10·1 answer
  • DESPERATE WILL GIVE BRAINLIST
    9·2 answers
  • A storm front moves in and Rachel and Pam notice the column of mercury in the barometer rises only to 736 mm. Assume the density
    11·1 answer
  • You start driving your car when the air temperature is 270.734 K. The air pressure in the tires is 454.518 kPa. After driving a
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!