Answer:


Explanation:
Given values
Mass (m) = 2kg
K = 400 N/M
Compressing it 0.3 m
<u>The law of conservation of energy</u>:


Energy of the spring deformation.
M mass of the block
x spring deformation
Therefore, if block left the spring (x = 0)

Where, Δl is initial spring deformation





<u>The law of conservation of energy</u>:

Where h is height


Cancel mass "m" each side

Distance along incline equals





Answer:
f = 7.97 x 10⁶ Hz = 7.97 MHz
Explanation:
The speed of a wave is given by the following formula:

where,
v = speed of the ultrasound wave through human tissue = 1540 m/s
f = frequency of ultrasound wave required = ?
λ = wavelength of ultrasound waves = smallest detail required = 0.193 mm
λ = 0.193 mm = 1.93 x 10⁻⁴ m
Therefore,
<u>f = 7.97 x 10⁶ Hz = 7.97 MHz</u>
Answer:
Yes, the velocity would also be zero.
Explanation:
Acceleration is the change in velocity over time, therefore, there has to be a change in velocity for something to accelerate. which means without acceleration, the object has no velocity.
The force exerted by gravity is:
F = m g
F = 3300 kg * 9.8 m/s^2
F = 32,430 N
The force exerted due to the inclined plane is:
F tractor = 32,430 N * sin 14
<span>F tractor = 7,823.75 N (answer)</span>