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earnstyle [38]
3 years ago
6

Can a body moving at constant speed have acceleration ?​

Physics
1 answer:
otez555 [7]3 years ago
6 0

  • <em><u>it can be safely concluded that an object moving in a circle at constant speed is indeed accelerating. It is accelerating because the direction of the velocity vector is changing.</u></em>

<h2><em><u>hope</u></em><em><u> it</u></em><em><u> helps</u></em><em><u>!</u></em></h2>

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An electromagnet produces a magnetic field of 0.520 T in a cylindrical region of radius 2.40 cm between its poles. A straight wi
koban [17]

Answer:

Magnetic force, F = 0.262 N

Explanation:

It is given that,

Magnetic field of an electromagnet, B = 0.52 T

Length of the wire, l = 2r =2\times 2.4=4.8\ cm=0.048\ m

Current in the straight wire, i = 10.5 A

Let F is the magnitude of force is exerted on the wire. The magnetic force acting on an object of length l is given by :

F=ilB

F=10.5\ A\times 0.048\ m\times 0.52\ T

F = 0.262 N

So, the magnitude of force is exerted on the wire is 0.262 N.

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3 years ago
Dana is on a train traveling at a speed of 20 km/h. Dana walks from the front of the train to the back of the train at a speed o
dezoksy [38]

Answer:

Diana's speed relative to ground is <u>16 km/h</u> in the direction of motion of train.

Explanation:

Given:

Velocity of train in forward direction is, v_{t,g}=20\ km/h

Here, v_{t,g}\to \textrm{velocity of the train relative to ground.}

Velocity of Diana relative to train in the backward direction is, v_{D,t}=-4\ km/h

Negative sign implies backward motion or motion opposite to the direction of train's motion. Here, Diana is walking from front of train to back. So, Diana is moving in the opposite direction.

Now, we know that, for two bodies 'A' and 'B', velocity of 'A' relative to ground is given as:

v_{A,g}=v_{B,g}+v_{A,B}

Therefore, velocity of Diana relative to ground is given as:

v_{D,g}=v_{t,g}+v_{D,t}

v_{D,g}=(20-4)\ km/h

v_{D,g}=16\ km/h

So, Diana's speed relative to ground is 16 km/h in the direction of motion of train.

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3 years ago
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zhannawk [14.2K]

Answer:

C

Explanation:

The mechanical advantage is always less than 1 because the force needed to move an object is always greater than the weight of the object.

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3 years ago
If the speed of an object decreases to one-half, what happens to its momentum?
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D. It decreases to one half.
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3 years ago
What is gravity? Pkz answer will mark brainliest.​
mixas84 [53]

Answer:

the force that attracts a body toward the center of the earth, or toward any other physical body having mass.

7 0
3 years ago
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