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4 years ago

Click the light switch to turn it on. What happens?

Physics

2 answers:

marishachu [46]4 years ago

7 0

The lightbulb turns on since you switch the light so I can be on........

Does that work???????

In-s [12.5K]4 years ago

4 0

the lightswitch turns on ig

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A motorcycle slows down uniformly from a speed of 21 m/s to rest in 6.0s. How far did it travel during this time?

Verizon [17]

Answer:

63 m

Explanation:

The initial velocity of the motorcycle is

$v_i = 21 m/s$

The final velocity is

$v_f = 0$

And the time taken is

$t=6.0 s$

Since the acceleration of the motorcycle is uniform, we can find the distance traveled by the motorcycle during this time by using the following SUVAT equation:

$S=\frac{1}{2} (v_i +v_f) t$

Substituting numbers into the equation, we find

$S=\frac{1}{2}( 21 m/s + 0)(6.0 s)=63 m$

7 0

3 years ago

A 19 g bullet is fired into the bob of a ballistic pendulum of mass 1.3 kg. When the bob is at its maximum height, the strings m

katovenus [111]

Answer:

217.43298 m/s

Explanation:

$m_1$ = Mass of bullet = 19 g

$m_2$ = Mass of bob = 1.3 kg

L = Length of pendulum = 2.3 m

$\theta$ = Angle of deflection = 60°

u = Velocity of bullet

Combined velocity of bullet and bob is given by

$v^2-u^2=2as\\\Rightarrow v=\sqrt{2aL(1-cos\theta)+u^2}\\\Rightarrow v=\sqrt{2\times 9.81\times (1-cos60)+0^2}\\\Rightarrow v=3.13209\ m/s$

As the momentum is conserved

$m_1u=(m_1+m_2)v\\\Rightarrow u=\frac{(m_1+m_2)v}{m_1}\\\Rightarrow v=\frac{(0.019+1.3)\times 3.13209}{0.019}\\\Rightarrow v=217.43298\ m/s$

The speed of the bullet is 217.43298 m/s

5 0

4 years ago

Why is the coefficient of friction independent of the mass?

Svet_ta [14]

Because the coefficient of friction depends on the surface

3 0

4 years ago

A sinusoidal wave travels along a string. if the time for a particular point to move from maximum displacement to zero displacem

Lisa [10]

The time it takes for a point to reach 0 displacement from maximum displacement is $\frac{\pi}{2}$ of a cycle. Thus, one period ( $2\pi$ ) will take $T=0.17*4=0.68s$ .

The frequency is simply $f=\frac{1}{T}=\frac{1}{0.68}=1.47Hz$ .

The speed is given by: $v=f\lambda=1.47*1.4 = 2.06m/s$

7 0

3 years ago

Amy walks 3 m from her desk to the teacher's desk. From the teacher's desk, she then walks 4 m in the opposite direction to the

Reptile [31]

I don't know what the tables you have look like but her <span>displacement</span> would be -1m

4 0

3 years ago

Read 2 more answers