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
posledela
3 years ago
13

1000 kg car takes travels on a circular track having radius 100 m with speed 10 m/s. What is the magnitude of the centripetal fo

rce acting on the car? *
A- 1 N
B- 100 N
C- 1000 N
D- 10000 N
Physics
1 answer:
Kryger [21]3 years ago
8 0

Answer:

its a

Explanation:

You might be interested in
A stream moving with a speed of 7.1 m/s reaches a point where the cross-sectional area of the stream decreases to one half of th
lana66690 [7]

Answer:

14.2 m/s

Explanation:

Given data:

Speed of the stream, v₁ = 7.1 m/s

let the cross section area at initial point be A₁

now area at the second point, A₂ = (1/2)A₁ = 0.5A₁

now, from the continuity equation, we have

A₁v₁ = A₂v₂

where, v₂ is the velocity at the narrowed portion

thus, on substituting the values, we get

A₁ × 7.1 = 0.5A₁ × v₂

or

v₂ = 14.2 m/s

8 0
3 years ago
HELP PLEASE<br><br> Fill in the blank:<br> The ? of water is 1 g/cm3.
ololo11 [35]
I think it’s density
3 0
3 years ago
Which of the following is a false statement? Select one:
Art [367]

Answer:

The false statement is in option 'd': The center of mass of an object must lie within the object.

Explanation:

Center of mass is a theoretical point in a system of particles where the whole mass of the system is assumed to be concentrated.

Mathematically the position vector of center of mass is defined as

\overrightarrow{r}_{com}=\int \overrightarrow{r}_{i}dm

where,

\overrightarrow{r}_{i} is the position vector of the mass dm.

As we can see for homogenous symmetrical objects such as a sphere,cube,disc the center of mass is located at the centroid of the shapes itself but in many shapes it is located outside the body also.

Examples of shapes in which center of mass is located outside the body:

1) Horseshoe shaped body.

2) A thin ring.

In many cases we can make shapes of bodies whose center of mass lies outside the body.

6 0
3 years ago
An airplane has wings, each with area A, designed so that air flows over the top of the wing at 265 m/s and underneath the wing
exis [7]

Answer

given,

Pressure on the top wing = 265 m/s

speed of underneath wings = 234 m/s

mass of the airplane =  7.2 × 10³ kg

density of air =  1.29 kg/m³

using Bernoulli's equation

 P_1 + \dfrac{1}{2}\rho v_1^2 = P_2 + \dfrac{1}{2}\rho v_2^2

 \Delta P =\dfrac{1}{2}\rho (v_2^2-v_1^2)

 \Delta P =\dfrac{1}{2}\times 1.29\times (265^2-234^2)

 \Delta P =9977.5 Pa

Applying newtons second law

2 Δ P x A - mg = 0

A =\dfrac{mg}{2\Delta P}

A =\dfrac{7.2\times 10^3 \times 9.8}{2\times 9977.5}

    A = 3.53 m²

7 0
3 years ago
Can you answer the question
Dominik [7]
Can u show the whole question plz
3 0
3 years ago
Other questions:
  • The half-life of plutonium-238 is 87.7 years. What percentage of the atoms in a sample of plutonium-238 will remain radioactive
    15·2 answers
  • Find the angle (above the horizontal) at which a projectile achieves its maximum range, if y=y0.
    11·1 answer
  • The milky way galaxy is the galaxy that is closest to us contains the most stars is farthest from us contains our solar system
    5·1 answer
  • 6–3 The current through a 0.1‐μF capacitor is a rectangular pulse with an amplitude of 2 mA and a duration of 5 ms. Find the cap
    14·1 answer
  • A forward-biased silicon diode is connected to a 12.0-V battery through a resistor. If the current is 12 mA and the diode potent
    6·1 answer
  • A bicyclist starts at point P and travels around a triangular path that takes her through points Q and R before returning to the
    11·1 answer
  • the two forces acting on a falling object are gravity and?....1.force, 2. friction, 3. air resistance, and 4. net force?​
    9·1 answer
  • A.
    15·2 answers
  • Energy that moves from a warmer object to a cooler object is called _______
    15·1 answer
  • Which force below acts at 90 degrees and is applied by a surface/wall to an object.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!