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Serga [27]
3 years ago
14

Write TRUE if the statement is correct and FALSE if it is not. Write your answer on the space provided.

Physics
1 answer:
ryzh [129]3 years ago
4 0

1 true

2true

3false

4false

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A space probe is fired as a projectile from the earth's surface with an initial speed of 2.44 104m/s. what will its speed be whe
Lostsunrise [7]
Projectile motion is characterized by an arc-shaped direction of motion. It is acted upon by two vector forces: horizontal component and vertical component. The horizontal component is in constant velocity motion, while the vertical component is in constant acceleration motion. These two motions are independent of each other.

Now, the total velocity of the space probe at the end of the projectile motion is determined through this equation:

V = √(Vx² + Vy²)

where Vx is the velocity in the horizontal direction and Vy is the velocity in the vertical direction.

Let's find Vx first. Assuming that the space probe was launched at an angle horizontal the Earth's surface, the launching angle is 0°. Thus, the initial velocity is 2.44×10⁴ m/s. 

For Vy, the free falling motion is 
Vy = √(2gh), where g is 9.81 m/s² and h is the distance traveled vertically by the space probe which represents the radius of the Earth equal to 6.37×10⁶ meters. Therefore,

V = √{(2.44×10⁴)² + [√(2×9.81×6.37×10⁶ )]²}
V = 26,839.14 m/s
8 0
4 years ago
Help please:))))))))))))))))))))
erastova [34]

Answer:

a and c

Explanation:

4 0
3 years ago
An airplane in the earth’s magnetic field can develop a voltage between its wingtips.
Svetradugi [14.3K]

Answer:

emf=0.125\ V

According to the Fleming's Left left hand rule we have higher potential on the right edge of the wing.

Explanation:

Given:

  • velocity of plane, v=250\ m.s^{-1}
  • magnetic field, B=5\times 10^{-5}\ T
  • angle between velocity and magnetic field, \theta=30^{\circ}
  • span of the wing, l=20\ m

We know:

emf=B.l.v\ sin\theta

emf=5\times 10^{-5}\times 20\times 250\times sin30^{\circ}

emf=0.125\ V

According to the Fleming's Left left hand rule we have higher potential on the right edge of the wing.

7 0
3 years ago
A 7.1 resistor and a 4.8 resistor are connected in series with a battery. the potential difference across the 4.8 resistor is me
Taya2010 [7]
For resistors in series in a DC circuit, the potential difference is proportional to the resistance.

The voltage V across the 7.1 ohm resistor can be found from the proportion
   V/7.1 = 12/4.8
   V = 7.1*12/4.8 = 17.75

The potential difference at the battery terminals is the sum of the potential differences across the two series resistors.
   Vbatt = 17.75 V + 12 V
   Vbatt = 29.75 V
4 0
3 years ago
Two point charges q1 = 4. 0 µc and q2 = -8. 0 µc are placed along the x-axis at x1 = 0 m and x2 = 0. 20 m, respectively. What is
scoundrel [369]

The electric potential energy of this system of charges will be +1.44 J. Option E is correct.

<h3>What is the electric potential energy ?</h3>

Electric potential energy stands for the energy that is required to displace a charge in against an electric field.

Given data;

q₁ = 4. 0 µc

q₂ = -8. 0 µc

D(distance between charges) = 0.2 m

The electric potential energy is found as;

\rm E = \frac{Kq_1q_2}{r} \\\\ \rm E = \frac{9 \times 10^9 \times 4 \times 10^{-6}\times (-8.0)\times 10^{-6}}{0.2} \\\\ E=+1.44 J

The electric potential energy of this system of charges will be +1.44 J.

Hence,option E is correct.

To learn more about the electric potential energy refer:

brainly.com/question/12645463

#SPJ4

5 0
2 years ago
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