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
jok3333 [9.3K]
2 years ago
9

I need it in the next hour or so!

Physics
1 answer:
PSYCHO15rus [73]2 years ago
3 0

The car is accelerating at 3 m/s² in the positive direction (to the right). By Newton's second law, the net force on the car in this direction is

∑ F = F[a] - F[f] - F[air] = ma

3100 N - 200 N - F[air] = (650 kg) (3 m/s²)

Solve for F[air] :

F[air] = 3100 N - 200 N - (650 kg) (3 m/s²)

F[air] = 3100 N - 200 N - 1950 N

F[air] = 950 N

You might be interested in
The free-fall acceleration at the surface of planet 1 is 22 m/s^2. The radius and the mass of planet 2 are twice those of planet
algol13

Answer:

g₂ = 11 m/s²

Explanation:

The value of free-fall acceleration on the surface of a planet is given by the following formula:

g = \frac{Gm}{r^2}

where,

g = free-fall acceleration

G = Universal Gravitational Constant

m = mass of the planet

r = radius of planet

FOR PLANET 1:

g_1 = \frac{Gm_1}{r_1^2}\\\\\frac{Gm_1}{r_1^2} = 22 m/s^2 --------------------- equation (1)

FOR PLANET 2:

g_2 = \frac{Gm_2}{r_2^2}\\\\g_2 = \frac{G(2m_1)}{(2r_1)^2}\\\\g_2 = \frac{1}{2}\frac{Gm_1}{r_1^2}\\\\

using equation (1):

g_2 = \frac{g_1}{2}\\\\g_2 = \frac{22\ m/s^2}{2}

<u>g₂ = 11 m/s²</u>

8 0
2 years ago
True or False. A material with randomly oriented atoms is magnetic.
Alexeev081 [22]

Answer:true

Explanation:

because atoms is what makes it able for things to be picked up

7 0
2 years ago
Read 2 more answers
PE (potential energy) + KE (kinetic energy) will equal ME (mechanical energy) ... explain this in your own words, or by using an
sdas [7]

Answer:

Potential energy plus kinetic energy equals mechanical energy because mechanical energy is basically just all of an object's energy, it's just two kinds of energy. The potential is stored inside and kinetic is being used. Both of those together is the total amount of the objects energy, which is the mechanical energy.

Explanation:

7 0
3 years ago
Read 2 more answers
John is carrying a shovelful of snow. The center of mass of the 3.00 kg of snow he is holding is 15.0 cm from the end of the sho
Andru [333]

Answer:

James is correct here as the force of hand pushing upwards is always more than the force of hand pushing down

Explanation:

Here we know that one hand is pushing up at some distance midway while other hand is balancing the weight by applying a force downwards

so here we can say

Upwards force = downwards Force + weight of snow

while if we find the other force which is acting downwards

then for that force we can say that net torque must be balanced

so here we have

F_{down} L_1 = W_{snow} L_2

so here we have

F_{down} = \frac{L_2}{L_1} (W_{snow})

so here we can say that upward force by which we push up is always more than the downwards force

8 0
3 years ago
What kind of frequency do radio waves have?<br><br>A. High frequency <br><br>B. Low frequency ​
inn [45]
B low frequency it is the lowest frequency
7 0
3 years ago
Other questions:
  • Two elevators begin descending from the same height. Elevator A has descended 4 feet after one second, 9 feet after two seconds,
    10·2 answers
  • You need to get to class, which is 282 meters away. You can only walk in the hallway at about 2.0 m/s (if you go any faster, you
    15·1 answer
  • A laser beam is incident at an angle of 30.2° to the vertical onto a solution of corn syrup in water. (a) If the beam is refract
    8·1 answer
  • The motion of a car on a position-time graph is represented with a horizontal line. What does this indicate about the car’s moti
    15·1 answer
  • A juggler has three objects in the air simultaneously. The masses of the objects are m, 2m, and 3m. At a particular instant, the
    13·1 answer
  • Which of the following is made from a Crystaline solid that conducts a current only under certain circumstances?
    8·1 answer
  • Two cars of the same mass have different velocities. Which car has more momentum?
    7·1 answer
  • What is the unit for measuring electric current?<br> A.Volt<br> B.ampere<br> C.ohm<br> D.coulomb
    5·2 answers
  • Although 0 dB is often referred to as the lower threshold of human hearing, it is important to realize that the human ear is not
    10·1 answer
  • What is kinetic energy
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!