The X and Y components are as follows;
1. X = 35 * cos 57 = 19. 1m/s; Y = 35 * sin 57 = 29.4 m/s
2. X = 12 * -cos 34 = -10 m/s; Y = 12 * -sin 34 = -6.7 m/s
3. X = 8 * -cos 90 = 0 m/s; Y = 12 -sin 90 = -8 m/s
4. X = 20 * cos 75 = 5. 2m/s; Y = 20 * (-sin 75) = -19.3 m/s
<h3>What are the horizontal and vertical components of the vectors?</h3>
The horizontal and vertical components of the velocities are given as follows:
- Horizontal component, X = x cos θ
- Vertical component, Y = y sin θ
1. 35 m/s at 57° from x-axis
X = 35 * cos 57 = 19. 1m/s
Y = 35 * sin 57 = 29.4 m/s
2. 12m/s at 34° S of W
X = 12 * -cos 34 = -10 m/s
Y = 12 * -sin 34 = -6.7 m/s
3. 8 m/s at South
X = 8 * -cos 90 = 0 m/s
Y = 12 -sin 90 = -8 m/s
4. 20 m/s at 275° from x-axis
X = 20 * cos 75 = 5. 2m/s
Y = 20 * (-sin 75) = -19.3 m/s
In conclusion, the X and Y components are found by taking cosines and sine of the angles.
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Answer:
Neptune and Uranus
Explanation:
Did a quiz on this not to long ago
a)]An expression for the magnitude of charge transferred Q is Q = W/V.
b) The magnitude of the charge, in coulombs is 1.02 x 10⁻⁹ Coulomb.
c) Number of electrons in this are 63.75 x 10⁸ electrons.
<h3>What are electrons?</h3>
The electrons are the spinning objects around the nucleus of the atom of the element in an orbit.
A balloon is charged until it has a voltage of v=9800V. A student reaches out and is shocked by a spark. The electric force does W= 1x10⁻⁶ J of work transferring the charge.
a) Work done = Charge x potential
W = Q x V
Q = W/V
b)Substitute the values into the expression, we have
|Q| = 1x10⁻⁶/9800
|Q| = 1.02 x 10⁻⁹ Coulomb
c) No of electrons = total charge /charge on electron
n = 1.02 x 10⁻⁹/1.6 x 10⁻¹⁹
n = 63.75 x 10⁸ electrons
Learn more about electrons.
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Answer:
False
Explanation:
A book resting on a shelf has no potential energy relative to the shelf, since it has height of zero meters relative to the shelf.
