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
lys-0071 [83]
3 years ago
7

Njjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

Physics
2 answers:
mario62 [17]3 years ago
7 0

Explanation:

Thanks for the points........

kolbaska11 [484]3 years ago
4 0

Answer:

njjjjjxndnxu xjdjd xkc xjencjf

You might be interested in
The force needed to keep a car from skidding on a curve varies inversely as the radius of the curve and jointly as the weight of
motikmotik

Explanation:

It is given that, the force needed to keep a car from skidding on a curve varies inversely as the radius of the curve and jointly as the weight of the car and the square of the car's speed such that,

F\propto \dfrac{mgv^2}{r}

F=\dfrac{kmgv^2}{r}

mg is the weight of the car

r is the radius of the curve

v is the speed of the car

Case 1.

F = 640 pounds

Weight of the car, W = mg = 2600 pound

Radius of the curve, r = 650 ft

Speed of the car, v = 40 mph

640=\dfrac{k(2600)(40)^2}{650}

k = 0.1

Case 2.

Radius of the curve, r = 750 ft

Speed of the car, v = 30 mph

F=\dfrac{0.1\times 2600\times (30)^2}{750}

F = 312 N

Hence, this is the required solution.

6 0
3 years ago
You and a friend each hold a lump of wet clay. Each lump has a mass of 25 grams. You each toss your lump of clay into the air, w
solniwko [45]

Answer:

a) p(total) = <0.05, 0.1, 0.1 > kg m/s

b) p = <0.05, 0.1, 0.1 > kg.m/s

c) v_f = < 1, 2, 2 > m/s

Explanation:

a.)

Mass of each lump = 25 g = 0.025 kg

Velocity of lump 1 = < -2, 0, -7 > m/s

Momentum of lump 1 = Mass×Velocity

                                   = 0.025×< -2, 0, -7 >

                                   = < -0.05, 0, 0.175> kg m/s

Velocity of lump 2 = < 4, 4, -3 > m/s

Momentum of lump 2 = Mass×Velocity

                                    = 0.025×< 4, 4, -3 >

                                    = < 0.1, 0.1, -0.075> kg m/s

Total momentum before impact  =  < -0.05,  0,  0.175 > + < 0.1, 0.1, -0.075>

                                                      = < 0.05, 0.1, 0.1 > kg m/s

⇒p(total) = <0.05, 0.1, 0.1 > kg m/s

b)

As we know that,

By the law of conservation of linear momentum,

The total momentum will be the same before and after the collision.

⇒Momentum of the stuck together  after the collision = Total momentum of the lumps just before impact.

⇒ p = <0.05, 0.1, 0.1 > kg m/s

c)

Let the final velocity =  v_f

Total mass = 0.025 + 0.025 = 0.05 kg

As

Momentum = mass ×velocity

⇒ <0.05, 0.1, 0.1 > = 0.05 ×v_f

⇒ v_f = <0.05, 0.1, 0.1 > / 0.05

          = < 1, 2, 2 > m/s

⇒v_f = < 1, 2, 2 > m/s

7 0
3 years ago
Which phenomenon related to light allows scientists to measure the distance between a star and Earth? A. Dark patches appear in
zalisa [80]

Answer: C. Stars have different colors based on their temperature

Explanation: The stars have different colors because the further away from earth the stars physical appearance may change.

4 0
3 years ago
Arrange the following in order of their appearance in the life cycle of a star: white dwarf, red giant, main-sequence star. Expl
Goryan [66]
Main-sequence star, red giant, and white dwarf
6 0
3 years ago
The scientific method often begins by asking questions about the natural world. Which of the following is an example of a scient
igomit [66]

Answer:

A: How does fertilizer affect plant growth?

3 0
3 years ago
Other questions:
  • ben walks 2 m from his desk to the teachers desk. From the teachers desk he then walks 3 m in the same direction to the classroo
    14·1 answer
  • Suppose you want to use this human engine to lift a 2.35 kg box from the floor to a tabletop 1.30 m above the floor. How much mu
    14·1 answer
  • What happens to a low-mass star after helium flash?
    6·1 answer
  • Diffraction supports the:<br><br> A. wave theory of light.<br><br> B. particle theory of light.
    15·2 answers
  • In the equation for elastic potential energy below, what is represented by the symbol k? Ee = ½ × k × e²
    5·1 answer
  • Does the work cause a change in kinetic energy or a potential energy?
    9·1 answer
  • Which of these objects has kinetic energy?
    14·2 answers
  • A poker is a long thin tool used to move pieces of coal or logs burning in a fire. To be as safe as possible, the poker should b
    8·1 answer
  • HERES THE ANSWER AND QUESTION
    5·2 answers
  • 1
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!