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ICE Princess25 [194]
3 years ago
11

Someone help me pls

Physics
2 answers:
TiliK225 [7]3 years ago
8 0

Explanation:

The dog was stationary at segment c

katen-ka-za [31]3 years ago
5 0

Answer:

I don't know if I'm wrong but I'm pretty sure stationary means that the thing is still. I would go with C And maybe D????

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In a circuit of two lamps in parallel there is 5 v across one lamp. what is the voltage across the other lamp? answer in units o
natima [27]
The voltage across the other lamp is also 5 V.
In fact, when two resistances are connected in parallel, they are connected to the same points of the circuit. This also means that the potential difference across the two sides of the resistors is the same, therefore the voltage across the two lamps connected in parallel is 5 V for both.
3 0
3 years ago
The only force acting on a 3.1 kg body as it moves along the positive x axis has an x component fx = -8x n, where x is in meters
My name is Ann [436]
<span>(a) -9.97 m/s
 (b) x = 2.83

   This is a simple problem in integral calculus. You've been given part of the 2nd derivative (acceleration), but not quite. You've been given the force instead. So let's setup a function for acceleration.

   f''(x) = -8x N / 3.1 kg= -8x kg*m/s^2 / 3.1 kg = -2.580645161x m/s^2

   So the acceleration of the body is now expressed as
 f''(x) = -2.580645161x m/s^2

    Let's calculate the anti-derivative from that.
 f''(x) = -2.580645161x m/s^2
 f'(x) = -1.290322581x^2 + C m/s

   Now let's use the known velocity value at x = 2.0 to calculate C
 f'(x) = -1.290322581x^2 + C 1
1 = -1.290322581*2^2 + C
 11 = -1.290322581*4 + C
 11 = -5.161290323 + C
 16.161290323 = C

   So the velocity function is
  f'(x) = -1.290322581x^2 + 16.161290323

   (a) The velocity at x = 4.5
  f'(x) = -1.290322581x^2 + 16.161290323
 f'(4.5) = -1.290322581*4.5^2 + 16.161290323
 f'(4.5) = -1.290322581*20.25 + 16.161290323
  f'(4.5) = -26.12903227 + 16.161290323
 f'(4.5) = -9.967741942

   So the velocity is -9.97 m/s

   (b) we want a velocity of 5.8 m/s
5.8 = -1.290322581x^2 + 16.161290323
 0 = -1.290322581x^2 + 10.36129032
 1.290322581x^2 = 10.36129032
 x^2 = 8.029999998
 x = 2.833725463</span>
4 0
3 years ago
The energy transformations in a car’s engine are an example of multiple transformations. Please select the best answer from the
seropon [69]

T is ur answer sorry if i am too late

7 0
3 years ago
The angle of incidence is the angle between the incident ray and the:
kirill115 [55]

The angle of incidence is the angle between the incident ray and the normal.

<u>Explanation:</u>

In attached diagram, a light ray approaching the mirror is known as an incident ray (I) whereas the light beam coming out of the mirror is called the reflected ray (R). At the intersection where the beam meets the mirror, you can draw a line perpendicular to the mirror surface.

This line is called as the normal (N) line. Normal divides the angle between the incident and the reflected rays into two equal angle. The angles between the incident and normal beam is called the incidence angle (\theta_{i}). The angle between the reflected beam and the normal one is called the reflection angle(\theta_{r}).

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3 years ago
How does the first law of motion give definition of inertia<br>​
horsena [70]

Answer:

Newton first law states that a body at rest remains at rest or if it is motion, remains in motion at a constant unless acted upon by a external force

6 0
3 years ago
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