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3 years ago

Define relative motion??

Physics

1 answer:

kolezko [41]3 years ago

8 0

Answer:

The laws of physics which apply when you are at rest on the earth also apply when you are in any reference frame which is moving at a constant velocity with respect to the earth. For example, you can toss and catch a ball in a moving bus if the motion is in a straight line at constant speed.

Explanation:

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Twopucksofequalmasscollideonafrictionlesssurface,asillustratedinthefigure.Immediatelyafterthe collision, the speed of the black

seropon [69]

Answer:

The speed of the white puck immediately after the collision is 2.6 m/s.

Explanation:

Given that,

Two pucks are equal masses.

Speed of black puck = 1.5 m/s

According to given figure,

We need to calculate the speed of the white puck immediately after the collision

Using law of conservation of momentum

$mv=m_{1}v_{1}\cos\theta+m_{2}v_{2}\cos\theta$

Put the value into the formula according to figure

$m\times3=m\times v_{1}\times\cos30+m\times1.5\times\cos60$

$3m=0.866m v_{1}+0.75m$

$v_{1}=\dfrac{3-0.75}{0.866}$

$v_{1}=2.6\ m/s$

Hence, The speed of the white puck immediately after the collision is 2.6 m/s.

8 0

3 years ago

Describe the motion of an object that has an elephant acceleration of 0 mi./s squared

Scorpion4ik [409]

The object does not move.

8 0

3 years ago

The following equation is an example of decay? 232/90 TH---4/2 HE +228/88 RA?

DaniilM [7]

Answer:

Alpha decay

Explanation:

Alpha decay is one of the three major types of decays, others being, beta decay and gamma decay.
When a radioactive isotope undergoes alpha decay it emits alpha particles. An alpha particle is equivalent to the nucleus of Helium atom.
Therefore, an atom undergoing decay, its atomic mass is decreased by 4 and its atomic number is decreased by 2.
Thus, since 232/90 Th, has undergone alpha decay its mass number is reduced by 4 to 228 and its atomic number by 2 to 88, and becomes 228/88 Ra.

5 0

3 years ago

Two identical spheres carry charges of +0.6 coulomb and -0.2 coulomb, respectively. If these spheres touch, the resulting charge

masya89 [10]

Answer:

2. +0.2 C

Explanation:

When the two spheres touch, the total charge will be redistributed such that the two spheres are at same potential:

$V_1 = V_2$

The potential can be rewritten as ratio between the charge on the sphere (Q) and the capacitance of the sphere (C):

$\frac{Q_1}{C_1}=\frac{Q_2}{C_2}$

Since the two spheres are identical, they have same capacitance:

$C_1 =C_2=C$

So we can write

$\frac{Q_1}{C}=\frac{Q_2}{C}$

$Q_1=Q_2$

And since the total charge is

$Q=+0.6 C-0.2 C=+0.4 C$

And this charge will be redistributed equally on the two spheres ( $Q_1 = Q_2$ ), we have

$Q_1 = Q_2 = \frac{Q}{2}=\frac{+0.4 C}{2}=+0.2 C$

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4 years ago

What is characteristic of both sound waves and

REY [17]

"(2) They transfer energy" is the best option from the list regarding the characteristics of both sound waves and electromagnetic waves, but these energies are different.

5 0

4 years ago

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Define relative motion??​

Define relative motion??