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Alexxandr [17]
3 years ago
6

A 1200kg car is driving at 40m/s on a wet asphalt road. If the driver slams on the brakes and the car skids to a halt. a)What is

the Force of friction acting on the car?
b) What would the force of friction be if the road was dry?

c) Will the car go farther when the road is wet or dry? Explain
Physics
2 answers:
qwelly [4]3 years ago
8 0

Answer:

It's Meme Time, it's Meme Time

Gather all your friends, it's Meme Time

It's Meme Time, it's Meme Time

The only cure for sadnessIt's Meme Time, it's Meme Time

Gather all your friends, it's Meme Time

It's Meme Time, it's Meme Time

The only cure for sadnessIt's Meme Time, it's Meme Time

Gather all your friends, it's Meme Time

It's Meme Time, it's Meme Time

The only cure for sadnessIt's Meme Time, it's Meme Time

Gather all your friends, it's Meme Time

It's Meme Time, it's Meme Time

The only cure for sadnessIt's Meme Time, it's Meme Time

Gather all your friends, it's Meme Time

It's Meme Time, it's Meme Time

The only cure for sadnessIt's Meme Time, it's Meme Time

Gather all your friends, it's Meme Time

It's Meme Time, it's Meme Time

The only cure for sadnessIt's Meme Time, it's Meme Time

Gather all your friends, it's Meme Time

It's Meme Time, it's Meme Time

The only cure for sadnessIt's Meme Time, it's Meme Time

Gather all your friends, it's Meme Time

It's Meme Time, it's Meme Time

The only cure for sadnessIt's Meme Time, it's Meme Time

Gather all your friends, it's Meme Time

It's Meme Time, it's Meme Time

The only cure for sadnessIt's Meme Time, it's Meme Time

Gather all your friends, it's Meme Time

It's Meme Time, it's Meme Time

The only cure for sadnessIt's Meme Time, it's Meme Time

Gather all your friends, it's Meme Time

It's Meme Time, it's Meme Time

The only cure for sadnessIt's Meme Time, it's Meme Time

Gather all your friends, it's Meme Time

It's Meme Time, it's Meme Time

The only cure for sadnessIt's Meme Time, it's Meme Time

Gather all your friends, it's Meme Time

It's Meme Time, it's Meme Time

The only cure for sadness

Explanation:

ycow [4]3 years ago
6 0

Answer:

the answer is B

Explanation:

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Which of the following is a hypothesis?
inna [77]

Answer:

C

Explanation:

Hypothesis is one of the science methods. Hypothesis is the same as guessing. It's a scientific method that precedes observations.

According to the question asking that Which of the following is a hypothesis ?

The correct option is C which is

If a squid is attacked by a predator, it will squirt ink

It is an hypothesis because there is no experimental evidence to back it up.

5 0
3 years ago
What is the answer to these questions?
Oksana_A [137]

Answer:

THES IS NOT

Explanation:

THIS PAPAER IS A FAKE PAPAER BEACISE POGI TALAGA AKO

7 0
3 years ago
A long, fine wire is wound into a coil with inductance 5 mH. The coil is connected across the terminals of a battery, and the cu
Effectus [21]

Answer:

Compared with the current in the first coil, the current in the second coil is unchanged.

Explanation:

All coils, inductors, chokes and transformers create a magnetic field around themselves consist of an Inductance in series with a Resistance forming an LR Series Circuit.

The steady state of current in the LR circuit is:

I= V/R (1 - e^-Rt/L)

Where I= current

R= Resistance

V= Voltage

Where R/L is the time constant.

For a conducting wire, it has a very small resistance. The time constant will be in microseconds. The current will be in a steady state after few second. The current is independent on the inductance and dependent on the resistance. The length of wire and the resistance here are the same. Therefore, the current remains unchanged.

5 0
3 years ago
Read 2 more answers
A 40 cm wire with a radius of 3 cm is oriented along the y axis and carries a current of 2 A. What is the magnitude of the magne
ZanzabumX [31]

Answer:

a) B = 1.99 x 10⁻⁴ Tesla

b) B = 0.88 x 10⁻⁴ Tesla

Explanation:

According to Biot - Savart Law, the magnetic field due to a currnt carrying straight wire is given as:

B = μ₀ I L/4πr²

where,

μ₀ = permebility of free space = 1.25 x 10⁻⁶ H m⁻¹

I = current = 2 A

L = Length of wire = 40 cm = 0.4 m

a)

r = radius of magnetic field = 2 cm = 0.02 m

Therefore,

B = (1.25 x 10⁻⁶ H m⁻¹)(2 A)(0.4 m)/4π(0.02 m)²

<u>B = 1.99 x 10⁻⁴ Tesla</u>

<u></u>

b)

r = radius of magnetic field = 3 cm = 0.03 m

Therefore,

B = (1.25 x 10⁻⁶ H m⁻¹)(2 A)(0.4 m)/4π(0.03 m)²

<u>B = 0.88 x 10⁻⁴ Tesla</u>

7 0
3 years ago
You're driving in a car at 50 km/h and bump into a car ahead traveling at 48 km/h in the same direction. the speed of impact is
salantis [7]

To solve this problem, we must remember about the law of conservation of momentum. The initial momentum mist be equal to the final momentum, that is:

m1 v1 + m2 v2 = (m1 + m2) v’

where v’ is the speed of impact

Since we are not given the masses of each car m1 and m2, so let us assume that they are equal, such that:

m1 = m2 = m

Which makes the equation:

m v1 + m v2 = (2 m) v’

Cancelling m and substituting the v values:

50 + 48 = 2 v’

2 v’ = 98

v ‘ = 49 km/h

 

<span>The speed of impact is 49 km/h.</span>

6 0
3 years ago
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