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
sukhopar [10]
2 years ago
14

1. A 9000 kg van was stopped at a traffic light when it rear-ended with an 850 compact car moving to the east at a velocity of 5

m/sec. What would be the velocity of the entangled cars after collision?
Physics
1 answer:
____ [38]2 years ago
8 0

Answer:

1.785 m/s

Explanation:

The momentum can be calculated using the expression below

M1 *V1 + M2 * V2 = (M1+M2) V3

M1= mass of van=9000 kg

M2= mass of car= 850kg

V3= velocity of entangled car

V1= Velocity of the van= 0

V2= velocity of the car= 5 m/ s

Substitute the values

(900×0) + (500×5)=( 900+500)× V3

2500=1400 V3

V3=2500/1400

V3= 1.785 m/s

Hence, velocity of the entangled cars after collision is 1.785 m/s

You might be interested in
Given a particle that has the velocity v(t) = 3 cos(mt) = 3 cos (0.5t) meters, a. Find the acceleration at 3 seconds. b. Find th
dalvyx [7]

Answer:

Explanation:

a )  V = 3 cos(0.5t)

differentiating with respect to t

dv /dt = -3 x .5 sin0.5t

= -1.5 sin0.5t.

acceleration = - 1.5 sin 0.5t

when t = 3 s

acceleration = - 1.5 sin 1.5

= - 1.496 ms⁻²

v = 3 cos.5t

b )  dx/dt = 3 cos 0.5 t

dx = 3 cos 0.5 t dt

integrating on both sides

x = 3 sin .5t / .5

x = 6 sin0.5t

At t = 2 s

x = 6 sin 1

x = 5.05 m

4 0
3 years ago
Which of the following tools measures weight? A balance A scale A cyclometer A graduated cylinder
Kazeer [188]
I'm pretty sure its a scale.
8 0
3 years ago
he capacitor can withstand a peak voltage of 550 VV . If the voltage source operates at the resonance frequency, what maximum vo
anygoal [31]

Answer:

The maximum voltage is 39.08 V.

Explanation:

Given that,

Voltage = 550 V

Suppose, In an L-R-C series circuit, the resistance is 400 ohms, the inductance is 0.380 Henry, and the capacitance is 1.20\times10^{-2}\mu F

We need to calculate the resonant frequency

Using formula of resonant frequency

f=\dfrac{1}{2\pi\sqrt{LC}}

Put the value into the formula

f=\dfrac{1}{2\pi\sqrt{0.380\times1.20\times10^{-8}}}

f=2356.8\ Hz

We need to calculate the maximum current

Using formula of current

I=\dfrac{V_{c}}{X_{c}}

I=2\pi f C\times V_{c}

Put the value into the formula

I=2\pi\times2356.8\times1.20\times10^{-8}\times550

I=0.0977\ A

We need to calculate the impedance of the circuit

Using formula of impedance

Z=\sqrt{R^2+(X_{L}-X_{C})^2}

At resonant frequency , X_{L}=X_{C}

So, Z = R

We need to calculate the maximum voltage

Using formula of voltage

V=IR

Put the value into the formula

V=0.0977\times400

V=39.08\ V

Hence, The maximum voltage is 39.08 V.

4 0
3 years ago
Daniel and Christopher were on a plane traveling at a velocity of 200 km/hr south for 1,000 km. How long (in hours) was the plan
docker41 [41]
Answer:
5 hours

step-by-step explanation:
very simple just divide 1,000 and 200 to get 5
3 0
3 years ago
What does a pshycometer measure
erma4kov [3.2K]
It measures<span> the relative humidity in the atmosphere through the use of two thermometers. The first, a dry bulb thermometer, is used to </span>measure<span> the temperature by being exposed to the air. The second, a wet bulb thermometer,</span>measures<span> temperature by having the bulb dipped in a liquid.</span>
5 0
3 years ago
Other questions:
  • Which are reactions that release energy? endothermic reactions exothermic reactions decomposition reactions
    8·1 answer
  • Newton’s first law of motion applies to what?
    8·1 answer
  • Researchers at the University of Georgia have evaluated trends in streamside forests in areas within roughly 400 feet of the sta
    15·1 answer
  • A: If a net force greater than 0 N is applied to an electron and to a proton, which one will accelerate more? The mass of an ele
    9·2 answers
  • Under ordinary conditions of temperature and pressure, the particles in a gas are Select one: a. closely packed. b. very far fro
    8·1 answer
  • Please follow I will follow you​
    12·2 answers
  • A 58 g firecracker is at rest at the origin when it explodes into three pieces. The first, with mass 12 g , moves along the x ax
    10·1 answer
  • Look at the diagrams. Each model the arrangement of particles in a substance.
    14·1 answer
  • What is the refractive index between glass and water?​
    11·1 answer
  • Convert 1 mm to meters using scientific notation. Include units in your answer.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!