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NeX [460]
3 years ago
6

An object is moving in a straight line at constant speed. A resultant torce begins to act upon

Physics
1 answer:
alekssr [168]3 years ago
3 0

Answer: The velocity magnitude or the velocity direction chages.

Explanation:

According to Newton's second law of motion, the acceleration of a system moved in same direction and is also directly proportional to the external force which acts on it while inversely proportional to the mass. The formula is: a = F/m

Based on the question, since the object obtains acceleration, then it can be infered that there will be changes in the velocity magnitude or the direction as a result of the motion.

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A hollow cubical box is 0.221 m on an edge. This box is floating in a lake with 1/4 of its height beneath the surface. The walls
yanalaym [24]

Answer:

3/4 filled with water

Explanation:

x = Fraction of box filled

g = Acceleration due to gravity = 9.81 m/s²

\rho_w = Density of water

V = Volume of water

Weight of empty box is equal to the weight of the water displaced

W_b=\frac{1}{4}V\times \rho_wg

As all the forces are conserved

W_b+xV\rho_wg=V\rho_wg\\\Rightarrow \frac{1}{4}V\times \rho_wg+xV\rho_wg=V\rho_wg\\\Rightarrow \frac{1}{4}+x=1\\\Rightarrow x=1-\frac{1}{4}\\\Rightarrow x=\frac{2}{3}

So, the box starts to sink when the box is 3/4 filled with water

8 0
3 years ago
Two cars are traveling at the same constant speed v. Car A is moving along a straight section of the road, while B is rounding a
Kamila [148]

Answer:

Car A is not accelerating, but car B is accelerating

Explanation:

Car A is not accelerating because , it is moving with uniform speed in a particular direction . Therefore its velocity too is not changing .

But car B is accelerating because , though its speed is uniform but its velocity is changing due to change in direction . On a circular path , direction of speed changes every moment . Therefore it has an acceleration called centripetal acceleration . Hence car B has acceleration.

7 0
4 years ago
When a plant is entering the calvin cycle of photosythesis______.
Korolek [52]
The Calvin cycle<span> refers to the light-independent reactions in photosynthesis that take place in three key steps. Although the </span>Calvin Cycle<span> is not directly dependent on light, it is indirectly dependent on light since the necessary energy carriers (ATP and NADPH) are products of light-dependent reactions.

So basically it indirectly needs the light, even it's called light-independant reaction.

So the answer is the last one.</span>
5 0
4 years ago
Read 2 more answers
ERCRSOVOS - Table tennis footwork that is useful in this moment to cover a large distance quickly (SCRAMBLED)PE)
nata0808 [166]

Answer:

it's CROSSOVER I knew it because I'm a table tennis player

4 0
3 years ago
When two balanced forces cancel each other, they are in?
emmainna [20.7K]
The forces are in equilibrium.
7 0
4 years ago
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