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
OLga [1]
2 years ago
13

An object has 22.4 kg•m/s of

Physics
2 answers:
Bad White [126]2 years ago
5 0

Answer:

22.4\:\mathrm{kg\cdot m/s}

Explanation:

Momentum is given by p=mv.

Let p_1 be the initial momentum of the object:

p_1=m\cdot v=22.4

If we doubled the mass, the new mass would be 2\cdot m, and if we halved the velocity, the new velocity would be \frac{1}{2}\cdot v.

Therefore, the final momentum would be:

p_f=2\cdot m\cdot \frac{1}{2}\cdot v=m\cdot v=\fbox{$22.4\:\mathrm{kg\cdot m/s}$}..

SSSSS [86.1K]2 years ago
4 0

Answer:

the answer is 22.4 kg*m/s

Explanation:

Such a bizarre unit!

Acellus is cool. I receive and share knowledge almost every day.

You might be interested in
Look at the equation shown below. What does the letter Q represent?
Westkost [7]

Answer:

Explanation:

I=CURRENT

Q=CHARGE

t=TIME

6 0
4 years ago
Read 2 more answers
Two identical charges q placed 2.0 mapart exert forces of magnitude 4.0 N on each other What is the value of the charge q? a) q
katen-ka-za [31]

Answer:

c) 4.2*10^{-5}C

Explanation:

Coulomb's law says that the force exerted between two charges is inversely proportional to the square of distance between them, and is given by the expression:

F=\frac{kq_{1}q_{2}}{r^{2}}

where k is a proportionality constant with the value k=9*10^{9}\frac{Nm^{2}}{C^{2}}

In this case q_{1}=q_{2}=q, so we have:

F=\frac{kq^{2}}{r^{2}}

Solving the equation for q, we have:

kq^{2}=Fr^{2}

q^{2}=\frac{Fr^{2}}{k}

q=\sqrt{\frac{Fr^{2}}{k}}

Replacing the given values:

q=\sqrt{\frac{4.0N*(2.0m)^{2}}{9*10^{-9}\frac{Nm^{2}}{C^{2}}}}

q=4.2*10^{-5}C

3 0
3 years ago
Ice skaters often end their performances with spin turns, where they spin very fast about their center of mass with their arms f
vampirchik [111]

Answer:

\large \boxed{\text{30 rev/s}}

Explanation:

This question is based on the Law of Conservation of Angular Momentum.

Angular momentum (L) equals the moment of inertia (I) times the angular speed (ω).

L = Iω

If momentum is conserved,

I₁ω₁ = I₂ω₂

Data:

 I₁ = 3.5    kg·m²s⁻¹

ω₁ = 6.0    rev·s⁻¹

 I₂ = 0.70 kg·m²s⁻¹

Calculation:

\begin{array}{rcl}I_{1}\omega_{1} &= &I_{2}\omega_{2}\\\text{3.5 kg$\cdot$m$^{2}$}\times \text{6.0 rev/s} &= &\text{0.70 kg$\cdot$m$^{2}$}\times\omega_{2}\\\text{21 rev/s} &= &0.70\omega_{2}\\\omega_{2} & = & \dfrac{\text{21 rev/s}}{0.70}\\\\&=&\textbf{30 rev/s}\\\end{array}\\\text{The skater's final rotational speed is $\large \boxed{\textbf{30 rev/s}}$}

8 0
3 years ago
While Newton's Second Law often deals with formulas and numerical calculations, there exist one very important nonnumerical conv
zheka24 [161]

Option B is the correct answer.

MKS system gives the following units:

Distance ----- meters

Mass ----- Kilograms

Time ----- seconds

meter is basic unit for length measurement. smaller units are centimeter, millimeter, micrometer, bigger units are kilometer and so on.

kilogram is the basic unit for mass. smaller unit is gram.

second is the basic unit for time. Greater units are minutes, hours, smallest unit are micro second and so on.

8 0
4 years ago
How long will it take you to swim 100 meters if you swim at a speed of 12.5 m/s?
saul85 [17]

100 meters divided by a speed of 12.5 meters a second equals 8 seconds.

5 0
3 years ago
Other questions:
  • A motor with an input power of 100 Watts is connected to a flywheel . How long in units of hours must the motor operate to trans
    6·1 answer
  • A plane takes off in san francisco at noon and flies toward the southeast. an hour later, it is 400 kilometers east and 300 kilo
    5·1 answer
  • A thin, light wire 75.2 cm long having a circular cross section 0.560 mm in diameter has a 25.2 kg weight attached to it, causin
    15·1 answer
  • An object with a mass of 100 grams is dropped from a certain height and has a velocity of 60 meters/second. if the potential ene
    5·1 answer
  • Which of the following planets orbits the fastest around the sun?
    13·1 answer
  • A chain link fence should be cut quickly with a
    13·1 answer
  • What is the final temperature of 0.5 kg of water initially at 18 °C after 65 kJ of
    8·2 answers
  • A satellite of 2,140 kg travels around the earth, of 5.97 - 1024
    15·1 answer
  • On an ice skating rink, a girl of mass 50 kg stands stationary, face to face with a boy of mass 80 kg. The children push off of
    9·1 answer
  • The game starts with the serve on the left side of the court.<br> O<br> True<br> O<br> False
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!