A car weighs 186 N. It's being pushed forward by its engine with a force of 942 N.1. What is the normal force acting on the car by the road?
N
2. What is the force of friction acting on the car by the road?.
N
3. What is the coefficient of kinetic friction between the car and the road?

Answers

Answer 1

Answer: Ok that a good question

Related Questions

Which of the following correctly describes a solenoid? A) The magnetic field around a solenoid is unipolar. B) The field around a solenoid is termed a bar magnet. C) A solenoid is created by winding current carrying wire into a coil. D) Increasing the current in the wires will reduce the magnetic field outside of the solenoid.
Natalia lifts a bag of groceries 0.50 m by exerting a force of 36 N. How much work did she do on the bag?
True or false : Scientific theories have withstood the test of time and are accepted as proven fact.
A cylindrical water tank has a radius of 3 yards in the 7.5 yards high what is the volume of the tank
What does the fox say

The temperature at which the air can hold no more water isA. the dew point.
B. relative humidity.
C. runoff.
D. evaporation.

Answers

i would pick d

i hope i helped

the answer to this question is B relative humidity!

The what is s measure of the number of waves that pass a point in a given amount of time

Answers

The 'frequency' is the number of waves that pass a point in one second.

If the given amount of time is, say, 'Q' seconds, then the number of waves
that pass a point in the given amount of time is (Q) times (the frequency).

Frequency is the number of waves that pass a given point in a certain amount of time.

3. During a race, a sprinter increases from 5.0 m/s to 7.5 m/s over a period of 1.25s. What is the sprinter’s average acceleration during this period?Also please try and explain
Please and Thank you

Answers

(7.5)-(5)
----------- = 2 m/s^2
(1.25-0)

Average acceleration is calculated using the equation V(f)-V(i) / t(f)-t(i). (Final velocity minus initial velocity divided by final time minus initial time)

A young man sets a goal to compete in a marathon in two weeks. He started training last week by exercising three to four times a week with his friend. After each training session he writes his daily experiences to assess problems that may hinder his achievements. What aspect of his fitness program could keep him from achieving his goal?

Answers

The aspect of his fitness program that could keep the young man from achieving his goal would potentially be the exercise with his friend. His friend could be a hindrance to his motivation to do more or to continue. If he's so attached with exercising with his friend and his friend decides to stop, then he would probably lose motivation.

Explanation:

The marathon is set to start in two weeks and the young man starts his training from the last week exercising three to four times a week. So this requires a lot of strength and a lot of hard work. So as there is only two weeks time for him, he needs to train regularly in order to increase his stamina and strength to run and win the marathon. He should remain hydrated all the time so that his body functions properly and does not affect his health. He should work on his speed and stamina and exercise regularly to keep him fit and be able compete in the marathon.

Why is the efficiency of a machine always less than 100 percent

Answers

Explanation :

The efficiency of a machine is always less than 100 %. This is because some of the energy gets lost in the form of heat energy, sound energy and frictional energy.

Mathematically it is defined as :

$\eta=(W_o)/(W_i)$

Where,

$\eta$ is the efficiency

$W_o$ is output work

$W_i$ is input work

Hence, this is the required explanation.

energy is lost due to friction or air resistance, through sound and heat energy.

A kettle transfers 1500 J of energy, 1200 J to a thermal energy store and 300 J to a vibrational energy store (sound). How efficient is the kettle?

Answers

Answer: 0.8

Explanation:

The efficiency is defined as the ratio of total imput energy that is actually utilized to the end of the device.

So if we have a total transfer of 1500j of energy, and 1200j are used to heat the thing inside the kettle, 300j are not used to the actual function of the kettle.

So the efficiency is n = 1200j/1500j = 0.8

This means that a 80% of the energy imput is actually used to heat the kettle.

Final answer:

To calculate the efficiency of the kettle, divide the useful output energy (1200 J) by the total input energy (1500 J) and multiply by 100%. This results in an efficiency of 80%, meaning 80% of the energy was converted into useful thermal energy.

Explanation:

In order to find the efficiency of the kettle, we need to compute the ratio of the useful output energy to the total input energy and then multiply by 100% to convert the decimal to a percentage. In this case, the useful output energy is the 1200 J transferred to the thermal energy store. The total input energy is the total energy transferred by the kettle which is 1500 J. So, the efficiency of the kettle is (1200 J / 1500 J) * 100% = 80%.

The remaining 20% energy is wasted and was transferred to the vibrational (sound) energy store, which is a non-useful energy output. An efficient appliance is one which converts a higher proportion of the input energy into useful output energy, with less of it wasted. In this case, 80% of the energy from the kettle was converted into useful thermal energy, hence the kettle is quite efficient.