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
Mademuasel [1]
2 years ago
9

Signment

Physics
1 answer:
jeka942 years ago
3 0

Answer:

v = 5.15 m/s

Explanation:

At constant velocity, the cable tension will equal the car weight of 984(9.81) = 9,653 N

As the cable tension is less than this value, the car must be accelerating downward.

7730 = 984(9.81 - a)

a = 1.95 m/s²

kinematic equations s = ut + ½at² and v = u + at

-5.00 = u(4.00) + ½(-1.95)4.00²

u = 2.65 m/s    the car's initial velocity was upward at 2.65 m/s

v = 2.65 + (-1.95)(4.00)

v = -5.15 m/s

You might be interested in
The magnetic field strength at the north pole of a 2.0-cm-diameter, 8-cm-long Alnico magnet is 0.10 T. To produce the same field
frosja888 [35]

Answer:

N = 3032  turns

Explanation:

The magnetic field produced by a solenoid is described by

        B = μ₀ n I

Where is the permittivity in a vacuum with a value of 4π 10⁻⁷ N /A²,  n  is the turn density and I the current

Let's apply this equation to the problem, the turn density is the number of turns per unit length, in this case it is the same magnet length

       L = 8 cm = 0.08 m

Let's calculate

      B = μ₀ N/L   I

      N = B L / μ₀ I

      N = 0.10 0.08 / (4π 10⁻⁷  2.1)

      N = 3,032 103 turns

4 0
3 years ago
2. A driver brings a car traveling at 22 m/s to a stop in 2.0 seconds. What is the car's acceleration?
sveta [45]

Answer:

11 m/s²

Explanation:

Acc = v/t

Acc = 22 / 2.0

Acc = 11 m/s²

5 0
3 years ago
Read 2 more answers
How are kinetic energy potential energy and thermal energy in a substance related?​
asambeis [7]

The energy associated with an object's motion is called kinetic energy. ... This is also called thermal energy – the greater the thermal energy, the greater the kinetic energy of atomic motion, and vice versa.

3 0
2 years ago
What is the acceleration of the object?<br> m/s2
Molodets [167]

Answer:use

Explanation:google

8 0
3 years ago
An unknown gas fills a cubical container of 0.87 m. If the mass of the gas is 0.316 g, what is the density of the gas ?
svetlana [45]

Answer:

The length of the Mercury column of thermometer at ice point is 20mm and 220mm at steam point . when the same Thermometer is placed in contact with another body ,it reads 5°c.what will the length of the Mercury column at the temperature?

3 0
1 year ago
Other questions:
  • One of relatively few reactions that takes place directly between two solids at roo temperature is
    5·1 answer
  • Our atmosphere constantly being heated by the sun is an example of
    5·1 answer
  • A meter stick is pivoted at its 50 cm mark but does not balance because of non-uniformities in its material that cause its cente
    5·1 answer
  • The aircraft has a mass of 6x 104kg. Two identical jet engines provide a thrusting
    11·1 answer
  • If feathers have a density of 0.500 lbs/ft^3, what volume in ft^3 will 8.0 lbs of feathers occupy?
    12·1 answer
  • Which of the following statements are true?
    9·2 answers
  • A rectangular plate has a length of (22.4 ± 0.2) cm and a width of (8.4 ± 0.1) cm. Calculate the area of the plate, including it
    7·1 answer
  • Human muscles have an efficiency of about __________. A. 9 to 17% B. 18 to 26% C. 27 to 35% D. 36 to 44%
    7·2 answers
  • two identical steel balls mounted on wooden posts initially have different amounts of charge, one -14цC and the other +2цC. the
    8·1 answer
  • Ten-story building has identical stairs throughout its stairways. A student calculates the amount of work required to climb one
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!