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iragen [17]
1 year ago
8

It says find the slope for each line I'm stuck on number one can you help me

Physics
1 answer:
Allushta [10]1 year ago
7 0
\text{slope}=\frac{y_2-y_1}{x_2-x_1}

(-2, -1)(3, 1)

Therefore,

\text{slope}=\frac{1-(-1)}{3-(-2)}=\frac{1+1}{3+2}=\frac{2}{5}

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Positive velocity changing velocity and acceleration.

Explanation:

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3 years ago
Two point sources produce waves of the same wavelength that are in phase. At a point midway between the sources, you would expec
iogann1982 [59]

Answer:

d)constructive interference

Explanation:

  • For any two waves being equal in wavelength and in phase with each other will always lead to a constructive interference when there is a superposition of those two waves.
  • Two waves being in phase means that each corresponding highs and low are aligned with each other. Their corresponding peaks occur at the same instant and at the same position.
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3 years ago
A 2.60kg block on a horizontal floor is attached to a horizontal spring that is initially compressed 0.0310m . The spring has fo
madreJ [45]

Answer:

Explanation:

In order to solve this problem we need to apply the Energy Conservation Theorem, The motion occurred on the ground so the potential gravitational energy is zero.

K_1+U_{e1}+W_f=K_2+U_{e2}

We need to calculate the work done by the friction force.

the friction force is given by:

F_f=\µ*F_N\\F_f=\µ*m*g\\F_f=0.39*2.60kg*9.8m/s^2\\F_f=9.9N

The work is given by:

W_f=F_f*d*cos(\theta)

The angle of the force is 180 degrees because it is opposite to the motion.

W_f=9.9N*(0.0120m)*cos(180)\\W_f=-0.12J

applying the theorem:

(0)+\frac{1}{2}*810N/m*(0.0310m)^2-0.12J=\frac{1}{2}*2.60*v^2+\frac{1}{2}*810N/m*(0.0190m)^2

0.269J=\frac{1}{2}*2.60*v^2+0.146J\\v=\sqrt{\frac{2*(0.269J-0.146J)}{2.60kg}}\\\\v=0.308m/s

7 0
3 years ago
The energy of a given wave in the electromagnetic spectrum is 2.64 × 10-21 joules, and the value of Planck’s constant is 6.6 × 1
bixtya [17]
We are given
E = <span>2.64 × 10-21 J
h = </span><span>6.6 × 10-34 J s

The options given below are frequencies, therefore, the question must be asking about the frequency fo the given wave

The equation is
E = h f
Simply substitute and solve for f which is the frequency
f = </span>2.64 × 10-21 J / 6.6 × 10-34 J s
f = <span>4.00 × 1012<span> hertz</span></span>
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4 years ago
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How do I solve this

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