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
djverab [1.8K]
3 years ago
5

If a car accelerates from 0 to 10 m/s in 4 seconds, and the mass of the car is 1500 kg. What force is created by the car?​

Physics
1 answer:
Minchanka [31]3 years ago
5 0

Answer:

PLS MARK BRAINLIEST

Explanation:

f=m (v- u)/t

u=0m/s

v=10m/s

t=4 secs

m=1500kg

f=1500(10-0)/4

f=3750N

You might be interested in
A 100-mm pipe is used to transfer oil from a reservoir to a 100- liter tank. It takes 45 minutes to fill the tank with oil that
Firlakuza [10]

Explanation:

Given that,

Diameter =100 mm

Volume = 100 liter

Time = 45 min

Viscosity = 0.005 Pas

Density = 900 kg/m³

(a). We need to calculate the volume flow rate of oil

Using formula of flow rate

q=\dfrac{V}{t}

Put the value into the formula

Q=\dfrac{0.1}{2700}

Q=3.7\times10^{-5}\ m^3/s

The volume flow rate of oil is 3.7\times10^{-5}\ m^3/s

(b). We need to calculate the mean velocity in the pipe

Using formula of mean velocity

v=\dfrac{Q}{A}

v=\dfrac{Q}{\dfrac{\pi}{4}\times d^2}

Put the value into the formula

v=\dfrac{3.7\times10^{-5}}{\dfrac{\pi}{4}\times(100\times10^{-3})^2}

v=4.7\times10^{-3}\ m/s

The mean velocity in the pipe is 4.7\times10^{-3}\ m/s.

(c). We need to calculate the Reynolds number

Using formula of the Reynolds number

R_{e}=\dfrac{\rho v d}{\mu}

Put the value in to the formula

R_{e}=\dfrac{900\times4.7\times10^{-3}\times100\times10^{-3}}{0.005}

R_{e}=84.6

The Reynolds number is 84.6.

(d). We need to calculate the maximum velocity in the pipe

Using formula of maximum velocity

V_{max}=2v_{avg}

Put the value into the formula

v_{max}=2\times4.7\times10^{-3}

v_{max}=9.4\times10^{-3}\ m/s

The maximum velocity in the pipe is 9.4\times10^{-3}\ m/s

Hence, This is the required solution

7 0
3 years ago
A flask contains equal masses of f2 and cl2 with a total pressure of 2.00 atm at 298k. What is the partial pressure of cl2 in th
Sindrei [870]

Answer:

Partial Pressure of F₂ = 1.30 atm

Partial pressure of Cl₂ = 0.70 atm

Explanation:

Partial pressure for gases are given by Daltons law.

Total pressure of a gas mixture = sum of the partial pressures of individual gases

Pt = P(f₂) + P(cl₂)

Partial pressure = mole fraction × total pressure

Let the mass of each gas present be m

Number of moles of F₂ = m/38 (molar mass of fluorine = 38 g/Lol

Number of moles of Cl₂ = m/71 (molar mass of Cl₂)

Mole fraction of F₂ = (m/38)/((m/38) + (m/71)) = 0.65

Mole fraction of Cl₂ = (m/71)/((m/38) + (m/71)) = 0.35 or just 1 - 0.65 = 0.35

Partial Pressure of F₂ = 0.65 × 2 = 1.30 atm

Partial pressure of Cl₂ = 0.35 × 2 = 0.70 atm

7 0
3 years ago
What is the concentration of H+ ions at a pH = 2
jolli1 [7]
Its 1.0*10^-7M     its considered a concentration because hydrogen ion is exactly equal to hydroxide ions produced by dissociation of water 
3 0
3 years ago
Which ion channels mediate the falling phase of an action potontial?
White raven [17]

Answer:

Voltage-gated K+ channels

4 0
3 years ago
Difference between moment and displacement​
harkovskaia [24]

<u>Displacement</u> is the difference between final position and initial position.

<u>Momentum</u> is the quantity of motion contained by an object.

  • It is the product of <em><u>mass and velocity.</u></em>
7 0
3 years ago
Other questions:
  • What is the first step in glycolysis
    8·1 answer
  • All of the following are possible sources of error in a scientific investigation except for
    7·2 answers
  • E. A racing car has a mass of 710kg. It starts from rest and travels 120m in
    5·1 answer
  • The ocean’s surface temperatures vary with time of year and a. latitude. c. seasons. b. longitude. d. moon phases.
    15·2 answers
  • What is the acceleration of a 100 kg if a net force of 200 N is applied to it?
    12·2 answers
  • Compare the practical uses and limitations of nuclear fission and fusion. Include in your answer a detailed description of the t
    14·1 answer
  • A gorilla drags a log across the jungle floor. The log begins at rest and accelerates at until the gorilla is moving at a fast l
    15·1 answer
  • A golf ball is sitting on a tee. The ball is struck with a golf club and flies
    15·2 answers
  • What is the value of the fixed points of a temperature scale
    15·1 answer
  • The acceleration time plot for a particle (starting from rest) moving on a straight line is shown in figure. For given time inte
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!