Answer:
(-5, 2)
Explanation:
We must remember that the components of a given point in a two-dimensional space are the points on an x & y coordinate axis
A = (-5, 8) = (x, y)
B = (0, -6) = (x, y)
Since the vector operation is a sum, we simply have to sum the components of x and the components of y.
A + B = (-5 + 0) , (8 + (-6))
A + B = (-5, 2)
Answer:
t = 1.7 x 10⁻⁷ s
Explanation:
Given,
The mass of the electron, m = 9.1 x 10⁻³¹ Kg
The force experienced by the electron, F = 1.6 x 10⁻¹⁷ N
The initial velocity of the electron, u = 0
The final velocity of electron, v = 3.0 x 10⁶ m/s
The acceleration of the electron is given by the relation
a = F/m
= 1.6 x 10⁻¹⁷ N / 9.1 x 10⁻³¹ Kg
= 1.76 x 10¹³ m/s²
Using the first equation of motion
v = u + at
t = (v - u) / a
= (3.0 x 10⁶ - 0) / 1.76 x 10¹³
= 1.7 x 10⁻⁷ s
Hence, the time taken by the electron to reach final speed is, t = 1.7 x 10⁻⁷ s
The velocity (V) of a wave is the frequency (F) times the wave length (lambda):
V = F * lamda
lambda is the distance from crest to crest which is twice the distance from crest to trough.
=> lamba = 2 * 3.00 m = 6.00 m
F = number of waves / time = 13.0 waves / 20.2 s
Now you can plug in the values in the formula of V:
V = 6.00 m/wave* 13.0 waves / 20.2 s = 3.86 m/s
Answer: 3.86 m/s
Answer:
the pilot should head the plane towarrds south- west
Solution:
The airspeed of the airplane, v = 280 km/h
The velocity of the wind, v' = 52 km/h South-west
Angle,
Now, measured angle in the clockwise direction from North:
Now,
south- west
After the ball leaves the bat, the only forces on it are air resistance and gravity.