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4 years ago

Please help me with my physics! I don not understand and please provide work.

Physics

1 answer:

den301095 [7]4 years ago

7 0

4) B) Speed = Distance/ time
5) C) By applying second law of newton " F = ma" we say that "15 = 12 × acceleration"
15/12= acceleration
acceleration = 1.25 m/s2
6) D) It will continue to accelerate to the right but at a slower rate because of the small force (F2) being applied from the right.

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A lightning bolt may carry a current of 1.00 104 A for a short time. What is the resulting magnetic field 160 m from the bolt? S

ZanzabumX [31]

Answer:

Result magnetic field=

$1.25*10^-^5T$

Explanation:

We are given:

$I = 1.00*10^4A$

r = 160m

Let us say the lightning bolt is a long straight conductor.

Therefore we will use the formula:

B = Uo•I / 2πr

Substituting figures in the equation, we have:

$B = [(4π*10^-^7 T•m/A)(1.00*10^4)] / (2π * 160)$ ;

$= 1.25 * 10^-^5 T$ ;

$Therefore, the result magnetic field at 160m = 1.25 * 10^-^5$

4 0

3 years ago

An 1,840 W toaster, a 1,380 W electric frying pan, and a 70 W lamp are plugged into the same outlet in a 15 A, 120 V circuit. (T

Pavlova-9 [17]

Answer with Explanation:

We are given that

Power of toaster= $P_1=1840 W$

Power of electric frying pan= $P_2=1380 W$

Power of lamp= $P_3=70 W$

Current in circuit=15 A

Potential difference= V=120 V

We know that

Current= $\frac{P}{V}$

Using the formula

Current drawn by toaster= $I_1=\frac{1840}{120}=15.3 A$

Current drawn by electric frying pan= $I_2=\frac{1380}{120}=11.5 A$

Current drawn by lamp= $I_3=\frac{70}{120}=0.58 A$

5 0

3 years ago

Light from a 504-nm monochromatic source is incident upon the surface of fused quartz (n = 1.56) at an angle of 17°. What is the

PilotLPTM [1.2K]

Answer:

73 degree

Explanation:

Angle of incidence = 17 degree

According to the laws of reflection, the angle of incidence is equal to the angle of reflection.

So, angle of reflection = 17 degree

Angle from the surface = 90 - 17 = 73 degree

7 0

3 years ago

Block A, with a mass of 4 kg, is moving with a speed of 2 m/s while Block B, with a mass of 8.4 kg, is moving in the opposite di

dybincka [34]

Answer:

The center of mass move with the velocity of -3.487 m/s.

Explanation:

Given values of block A.

Mass of block A, (M1) = 4 kg

Speed of block A, (V1) = 2 m/s

Given values of block B.

Mass of block B, (M2) = 8.4 kg

Speed of block B, (V2) = -6.1 m/s

Below is the formula to find the velocity of center of mass.

$Velocity = \frac{M1V1 + M2V2}{M1 + M2} \\$

$= \frac{4 \times 2 + 8.4 \times (-6.1) }{4 + 8.4} \\$

$= \frac{- 43.24}{12.4}\\$

$= - 3.487 m/s$

7 0

3 years ago

If you don't mind can you also answer 2 more questions

Anastaziya [24]

Take into account that conduction is the process at which heat is propagated by the termical motion of the molecules, without a real desplacement of the molecules.

Based on the previous definition, the following is an example of heat transfer by condu

7 0

1 year ago