If an earthquake wave having a wavelength of 13 km causes the ground to vibrate 10 times (1 point) each minute, what is the spee
1 answer:
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Answer:
a
b
Explanation:
From the question we are told that
The speed of the airplane is
The angle is
The altitude of the plane is
Generally the y-component of the airplanes velocity is
=>
=>
Generally the displacement traveled by the package in the vertical direction is
=>
Here the negative sign for the distance show that the direction is along the negative y-axis
=>
Solving this using quadratic formula we obtain that
Generally the x-component of the velocity is
=>
=>
Generally the distance travel in the horizontal direction is
=>
=>
Generally the angle of the velocity vector relative to the ground is mathematically represented as
Here is the final velocity of the package along the vertical axis and this is mathematically represented as
=>
=>
and v_x is the final velocity of the package which is equivalent to the initial velocity
So
The negative direction show that it is moving towards the south east direction
Explanation:
C is correct.
Newton second law states that force is directly proportional to acceleration with m being the constant of variation.
So
A is wrong, the constant g only happens in free fall or in vertical direction
B and D are wrong due to the mathematical error or equation error
Answer
given,
L(t) = 10 - 3.5 t
mass of particle = 2 Kg
radius of the circle = 3.1 m
a) torque
τ =
τ =
τ = -3.5 N.m
Particle rotates clockwise as i look down the plane. Hence, its angular velocity is downward.
L decreases the angular acceleration upward. so, net torque is upward.
b) Moment of inertia of the particle
I = m R^2
I = 2 x 3.1²
I = 19.22 kg.m²
L = I ω
ω =
ω =
ω =
A = 0.52 rad/s B = -0.182 rad/s²