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3 years ago

The kinetic energies of particles in a sample of matter are increasing. This sample is most likely

2 answers:

5 0

Temperature changes causes the average kinetic energy of molecules to increase or decrease. If the kinetic energies of particles are increasing, the temperature must have been on rise.

Sedaia [141]3 years ago

4 0

Answer:

The sample is most likely gaining thermal energy

Explanation:

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Part A Determine the magnitude of the x component of F using scalar notation. Fx F x = nothing lb Request Answer Part B Determin

maksim [4K]

As we know that force F makes an angle of 60 degree with X axis

so the X component is given as

$cos60 = \frac{F_x}{F}$

now we have

$F_x = F cos60$

$F_x = 0.50 F$

Similarly we know that force F makes an angle of 45 degree with Y axis

so the X component is given as

$cos45 = \frac{F_y}{F}$

now we have

$F_y = F cos45$

$F_y = 0.707 F$

Now for the component along z axis we know that

$F_x^2 + F_y^2 + F_z^2 = F^2$

now plug in all components

$(0.707 F)^2 + (0.50 F)^2 + F_z^2 = F^2$

$0.5 F^2 + 0.25 F^2 + F_z^2 = F^2$

$F_z^2 = F^2(1 - 0.75)$

$F_z^2 = 0.25 F^2$

$F_z = 0.5 F$

5 0

3 years ago

What is the purpose of using a wedge?

valentinak56 [21]

Think of a wedge as something you put in between objects, so it is a separates objects

4 0

3 years ago

The image messed up but you get the point. Don't be mean and just answer to get the points, please and thank you.

Katarina [22]

Answer:

Answer is A, it will pass through to focal point after reflecting.

Explanation:

I had the same question in a test, Sorry that you had to do this question in middle school.

4 0

3 years ago

A cue ball with mass 170g hits a stationary number 8 ball, which has mass 160g. The cue ball

forsale [732]

Answer:

0.49 m/s

Explanation:

The law of conservation of linear momentum states that the sum of momentum in a system before and after collision are same. Momentum is a product of mass and velocity of an object hence in this case

$m_cu_c+m_8u_8=m_cv_u+m_8v_8$

Where m represent mass, u and v represent the initial and final velocities respectively, subscripts c and 8 represent cue ball and number 8 ball respectively.

Since number 8 ball is initially at rest, its initial velocity is zero. Replacing mass of cue ball with 170 g while mass of number 8 ball with 160g, then taking final velocity of cue ball as 0.2 m/s and final velocity of 8 ball as 0.3 m/s then we get

$170u_c+160*0=170*0.2+170*0.3\\u_c\approx 0.49 m/s$

3 0

3 years ago

You rub a balloon on your head and it becomes negatively charged. The balloon will be MOST attracted to A) a piece of metal. B)

NikAS [45]

I believe the correct answer is B.<span>positively charged hair.</span>

8 0

3 years ago

Read 2 more answers