All categories

3 years ago

HELP PLEASE! 98 POINTS FOR ANSWER

Physics

1 answer:

sasho [114]3 years ago

3 0

Well! see the car experiences 300 N force to the right from the engine.

It also experiences 150N force to left due to friction and air resistance

Now, we know it is the net force which will decide the car will move in which direction

We have net force=300-150=150N

which is towards right

So that means car will accelerate in right direction.

Hope it helps!!

You might be interested in

4. What is the electric field strength 1.4 nm from a charge of 4.7 cC?

pentagon [3]

The electric field strength is $2.16\cdot 10^{26} N/C$

Explanation:

The strength of the electric field produced by a single point charge is given by:

$E=k\frac{q}{r^2}$

where

$k=8.99\cdot 10^9 Nm^{-2}C^{-2}$ is the Coulomb's constant

q is the magnitude of the charge

r is the distance from the charge at which the field strength is calculated

For the charge in the problem, we have:

$q=4.7 cC = 0.047 C$ is the charge

$r=1.4 nm = 1.4\cdot 10^{-9} m$

Therefore, the electric field strength is

$E=(8.99\cdot 10^9)\frac{0.047}{(1.4\cdot 10^{-9})^2}=2.16\cdot 10^{26} N/C$

Learn more about electric fields:

brainly.com/question/8960054

brainly.com/question/4273177

#LearnwithBrainly

5 0

3 years ago

Describe how resistance affects the flow of current in a circuit

Sergeu [11.5K]

Resistance decreases the flow of current in a circuit.

Explanation:

The resistance of an electrical circuit is defined as the opposition to the flow of current in that particular circuit

4 0

3 years ago

A tire swing hanging from a branch reaches nearly to the ground. How could you estimate the height of the branch using only a st

AlexFokin [52]

Answer:

Explanation:

With the help of expression of time period of pendulum we can calculate the height of the branch . The swinging tire can be considered equivalent to swinging bob of a pendulum . Here length of pendulum will be equal to height of branch .

Let it be h . Let the time period of swing of tire be T then from the formula of time period of pendulum

$T = 2\pi\sqrt{\frac{l}{g} }$ where l is length of pendulum .

here l = h so

$T = 2\pi\sqrt{\frac{h}{g} }$

$h = \frac{T^2g}{4\pi^2}$

If we calculate the time period of swing of tire , we can calculate the height of branch .

The time period of swing of tire can be estimated with the help of a stop watch . Time period is time that the tire will take in going from one extreme point to the other end and then coming back . We can easily estimate it with the help of stop watch .

4 0

3 years ago

Define "increased productivity" in terms of the number of tasks and the amount of time.

vovikov84 [41]

Answer:

The greater the amount of output for a given unit of input, the higher the overall productivity. Businesses generally aim to improve productivity over time to maintain competitiveness and increase the business's profitability. Individuals are familiar with the idea of productivity in their own lives.

6 0

3 years ago

Football player a has a mass of 210 pounds and is running at a rate of 5.0 miles/hours he collides with a player b. Player B has

diamong [38]

according to conservation of momentum , in absence of external forces , the total momentum of system of the particles remain same both before and after collision.

momentum of colliding objects before collision = momentum of colliding objects after collision.

m1 v1i + m2 v2i = m2 v1f + m2 v2f

where m1 and m2 are the two colliding objects. v1i and v2i are their respective initial velocities before collision and v1f and v2f are their respective final velocities after collision.

hence the correct statement is

total momentum before the collision is equal to the momentum after collision.

5 0

3 years ago