Answer:
1398.12 N
Explanation:
We define the x-axis in the direction parallel to the movement of the truck on and the y-axis in the direction perpendicular to it.
x-components of the ropes forces
T₁x = 615N*cos31°=527.1579 N :Tension in direction x of the rope of the car 1
T₂x= 961 N*cos25°=870.96 N :Tension in direction x of the rope of the car 2
Net forward force exerted on the truck in the direction it is headed (Fnx)
Fnx = T₁x + T₂x
Fnx = 527.1579 N + 870.96 N
Fnx = 1398.12 N
<span>The
answer is towards <span>the poles. This is because, at
the poles of the magnet, the magnetic field lines get closer together hence
indicating that the magnetic force is stronger here. The fields are closest
together at the center of the magnet and farthest at the outside side of the
magnet. </span></span>
<h3><u>Answer and explanation;</u></h3>
- <em><u>Sound waves are mechanical waves and are examples of the longitudinal type, a longitudinal wave involves the movement of molecules in the medium parallel to the direction of the wave.</u></em>
- Sound waves are longitudinal mechanical waves because they move particles parallel to their direction of travel. For example, if a sound wave travels from left to right.
- <em><u>Pitch is what we perceive as the low or high note quality of a sound. Pitch is determined by the frequency of the sound wave that moved through the air to our eardrums. Frequency is the time taken for a complete oscillation of a wave. </u></em>
- The more energy or work used to create the vibration, which in turn creates the sound wave, the greater the amplitude of the wave and the louder the sound. Wavelength is the distance between two successive rarefactions or compression in a longitudinal wave.
- For example, if you were to lightly hit a drum with a drum stick, there would be a softer sound as opposed to the loud boom that would be created if you hit the drum with all of your might
Answer:
The number of oscillation is 36.
Explanation:
Given that
Mass = 280 g
Spring constant = 3.3 N/m
Damping constant 
We need to check the system is under-damped, critical damped and over damped by comparing b with 


Here, b<<
So, the motion is under-damped and will oscillate

The number of oscillation before the amplitude decays to
of its original value





We need to calculate the time period of one oscillation




The number of oscillation is



Hence, The number of oscillation is 36.