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
kobusy [5.1K]
3 years ago
11

If an object is not moving, what do we know about the forces acting on it?

Physics
2 answers:
Nat2105 [25]3 years ago
7 0
I think it should be 'They are balanced' if I'm not wrong
erik [133]3 years ago
7 0
If the object is not moving then the forces acting on it are balanced. Also if the object is moving in a straight line at a constant speed than the forces on it are also balanced.
You might be interested in
Please help I literally don’t understand
Veseljchak [2.6K]

Answer:

A= 2

B=3

C=4

D=5

E=7

F=8

H=12

7 0
3 years ago
A motor keep a Ferris wheel (with moment of inertia 6.97 × 107 kg · m2 ) rotating at 8.5 rev/hr. When the motor is turned off, t
Talja [164]

Answer:

P = 133.13 Watt

Explanation:

Initial angular speed of the ferris wheel is given as

\omega_i = 2\pi f

\omega_i = 2\pi(8.5/3600)

\omega_i = 0.015 rad/s

final angular speed after friction is given as

\omega_f = 2\pi f

\omega_f = 2\pi(7.5/3600)

\omega_f = 0.013 rad/s

now angular acceleration is given as

\alpha = \frac{\omega_f - \omega_i}{\Delta t}

\alpha = \frac{0.015 - 0.013}{15}

\alpha = 1.27 \times 10^{-4} rad/s^2

now torque due to friction on the wheel is given as

\tau = I \alpha

\tau = (6.97 \times 10^7)(1.27 \times 10^{-4})

\tau = 8875.3 N m

Now the power required to rotate it with initial given speed is

P = \tau \omega

P = 8875.3 \times 0.015

P = 133.13 Watt

8 0
3 years ago
The park has added two more cars to the already existing roller coaster. If the park wants to maintain the speed of the roller c
vredina [299]
D because friction will slow it down going up hills (for safety reasons) and you go really fast going down.
7 0
3 years ago
Read 2 more answers
15 points! Middle School Physical Science.
solniwko [45]

Answer:

1st t=d/s

2nd s=d/t

5th d=st

are all of the variations I came up with

Explanation:

the original formula for speed is s=d/t

then, I created a ratio of s/1=d/t and cross multiplied to find d=st

then, I isolated the t in one side by dividing by s on both sides.

6 0
3 years ago
Read 2 more answers
A proton traveling to the right enters a region of uniform magnetic field that points into the screen. When the proton enters th
muminat

Answer:

deflected toward bottom of the screen

Explanation:

When entering the region with magnetic field, a magnetic force is exerted on the proton. This force is perpendicular to both the direction of the magnetic field and the direction of the velocity of the proton.

The direction of the force can be determined by using the right-hand rule. We have:

- Index finger: direction of the velocity of the proton --> to the right

- Middle finger: direction of the magnetic field --> into the screen

- Thumb: direction of the magnetic force --> toward bottom of the screen

So, the correct answer is

deflected toward bottom of the screen

8 0
3 years ago
Other questions:
  • Is there 1,000 more milky way in the galaxy???If it is true is there life also?
    11·2 answers
  • A biker is pedaling at a constant speed of 36 km/h. During the last 10 s of the race, he increases his speed with a constant acc
    14·1 answer
  • Which type of central heating system is often used when heating many buildings from a central location?
    7·2 answers
  • The coefficent of static friction between the floor of a truck and a box resting on it is 0.28. The truck is traveling at 72.4 k
    15·1 answer
  • An experiment is conducted using 2 plants to determine if the amount of sunlight they receive affects how fast they grow. Which
    15·1 answer
  • You run 100 meters in 50 seconds. Calculate your speed, label with m/s
    7·1 answer
  • Four seconds after being launched, what is the height of a ball that starts from a height of 12 m with an initial upward velocit
    13·1 answer
  • compared to an object that does not roll, but instead slides without friction, should a rolling object be released from the same
    10·1 answer
  • Please help me with this​
    9·1 answer
  • It is class 12th physics questions can anyone help me ​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!