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TEA
10 days ago
14

Write a hypothesis for Part II of the lab, which is about the relationship described by F = ma. In the lab, you will use a toy c

ar and apply forces to it. Use the format of "if . . . then . . . because . . .” and be sure to answer the lesson question "How can Newton's laws be experimentally verified?” specific to Newton’s second law.
Physics
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A uniform magnetic field makes an angle of 30o with the z axis. If the magnetic flux through a 1.0 m2 portion of the xy plane is
Yuliya22 [3333]

Response:

(b) 10 Wb

Clarification:

Given;

angle of the magnetic field, θ = 30°

initial area of the plane, A₁ = 1 m²

initial magnetic flux through the plane, Φ₁ = 5.0 Wb

The equation for magnetic flux is;

Φ = BACosθ

where;

B denotes the magnetic field strength

A represents the area of the plane

θ is the inclination angle

Φ₁ = BA₁Cosθ

5 = B(1 x cos30)

B = 5/(cos30)

B = 5.7735 T

Next, calculate the magnetic flux through a 2.0 m² section of the same plane:

Φ₂ = BA₂Cosθ

Φ₂ = 5.7735 x 2 x cos30

Φ₂ = 10 Wb

<pHence, the magnetic flux through a 2.0 m² area of the same plane is 10 Wb.

Option "b"

3 0
2 months ago
A vehicle ___________ occurs when the driver begins to back up and is unaware that a person is behind the vehicle.
Maru [3345]
I'm unaware of the term accident?
6 0
2 months ago
Read 2 more answers
By how much does the gravitational potential energy of a 54-kg pole vaulter change if her center of mass rises about 4.0 m durin
Ostrovityanka [3204]
<span>At ground level, the gravitational potential energy of any object is zero. To calculate potential energy, you multiply the object's height in meters by its mass in kilograms and the acceleration due to gravity to arrive at Joules. Any object at ground level will have a potential energy totaling zero newtons since anything times zero equals zero. A mass of 54 kg situated 4 meters above ground possesses a gravitational potential energy of 2116.8 Joules.</span>
8 0
1 month ago
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A brass lid screws tightly onto a glass jar at 20 degrees C. To help open the jar, it can be placed into a bath of hot water. Af
serg [3582]

Answer:

0.0016 cm

Explanation:

\alpha_b = The thermal expansion coefficient for brass = 19\times 10^{-6}\ /^{\circ}C

\alpha_g = The thermal expansion coefficient for glass = 9\times 10^{-6}\ /^{\circ}C

\Delta T = Temperature change = (60-20)^{\circ}C

R_0 = Original radius = 4 cm

The change in radius is described by

R=R_0(1+\alpha\Delta T)

The radius difference between the lid and the jar

\Delta R=R_b-R_g\\\Rightarrow \Delta R=R_0(1+\alpha_b\Delta T)-R_0(1+\alpha_g\Delta T)\\\Rightarrow \Delta R=R_0(\alpha_b-\alpha_g)\Delta T\\\Rightarrow \Delta R=4\times (19\times 10^{-6}-9\times 10^{-6})\times (60-20)\\\Rightarrow \Delta R=0.0016\ cm

The gap measures 0.0016 cm or 0.000016 m

8 0
2 months ago
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