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
snow_tiger [21]
2 years ago
13

Tốc độ v của một vật được cho bởi phương trình v = At

Physics
1 answer:
ki77a [65]2 years ago
5 0

If <em>v(t)</em> is speed measured in meters per second (m/s), and <em>t</em> is time measured in seconds (s), then the constants <em>A</em> and <em>B</em> in

<em>v(t)</em> = <em>At</em> ³ - <em>Bt</em>

must have units of m/s⁴ and m/s², respectively; otherwise, the equation is dimensionally inconsistent.

[m/s] = <em>A</em> [s]³ - <em>B</em> [s]

[m/s] = [m/s⁴] [s]³ - [m/s²] [s]

[m/s] = [m/s] - [m/s]

[m/s] = [m/s]

You might be interested in
Mechanical waves can travel through _______.
eimsori [14]

mediums only, mechanical waves always propagate through medium

5 0
3 years ago
A flat sheet is in the shape of a rectangle with sides of lengths 0.400 m and 0.600 m. The sheet is immersed in a uniform electr
Katen [24]

Answer:

ФE = 9.403W

Explanation:

In order to calculate the magnitude of the electric flux trough the sheet, you use the following formula:

\Phi_E=\vec{A}\cdot \vec{E}=AEcos\theta       (1)

A: area of the rectangular sheet = (0.400m)(0.600m) = 0.24m^2

E: magnitude of the electric field = 95.0N/C

θ: angle between the direction of the electric field and the normal to the surface of the sheet

You replace the values of the parameters in the equation (1):

\Phi_E=(0.24m^2)(95.0N/m)cos(20\°)=9.304W

The magnitude of the electric flux is trough the sheet is 9.403W

5 0
2 years ago
In a certain time period a coil of wire is rotated from one orientation to another with respect to a uniform 0.38-T magnetic fie
Evgesh-ka [11]

Answer:

8.4 V

Explanation:

induced emf, e1 = 5.8 V

Magnetic field, B1 = 0.38 T

magnetic field, B2 = 0.55 T

induced emf, e2 = ?

As we know that the induced emf is directly proportional to the magnetic field strength.

When the other parameters remains constant then

\frac{e_{1}}{e_{2}}=\frac{B_{1}}{B_{2}}

\frac{5.8}{e_{2}}=\frac{0.38}{0.55}

e2 = 8.4 V

Thus, the induced emf is 8.4 V.

4 0
3 years ago
A Jaguar XK8 convertible has an eight-cylinder engine. At the beginning of its compression stroke, one of the cylinders contains
Colt1911 [192]

If only I was smart then I could help you :/ no but like for real im madddd dumb sorry :(

4 0
3 years ago
Chet believes that electric fields can impact objects only when the objects are in direct contact. Tonya disagrees with Chet. Wh
Murljashka [212]

B because it is the only evidence that displays an effect from the field without contact

3 0
3 years ago
Other questions:
  • What is the smallest part of a compound called? element atom mixture molecule
    8·2 answers
  • How can the time period of a pendulum be decreased or increased
    13·1 answer
  • Multiple Choice
    13·1 answer
  • A bird flies 3.7 meters in 46 seconds, what is its speed?
    10·1 answer
  • A cubic sample of a new kind of artificial tissue is subject to an increase in pressure of 160 kPa which results in a reduction
    9·1 answer
  • Which amendment deals with state rights
    15·1 answer
  • What is frequency measured in? What is the amplitude?
    5·1 answer
  • What is forward and downward speed
    11·1 answer
  • A car is driving directly north on the freeway at a speed of 119 km/h and a truck is leaving the freeway driving 87.7 km/h in a
    8·1 answer
  • The bending of waves such as sound waves, light waves, and waves in water, around obstacles or the edges of openings is called.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!