Answer:
5.9 x 10⁻⁷m
Explanation:
Given parameters:
Frequency = 5.085 x 10¹⁴Hz
Speed of light = 3.0 x 10⁸m/s
Unknown:
Wavelength of the orange light = ?
Solution:
The wavelength can be derived using the expression below;
wavelength = 
v is the speed of light
f is the frequency
wavelength = 
= 5.9 x 10⁻⁷m
Acceleration = velocity/ time
Acceleration = 0.7-0.3 /30= 0.01 m/s^2
Notice that velocity is calculated the final speed minus the initial !
Answer:
1.25 m/s^2
Explanation:
m = 76 kg, R = 840 N
Let a be the acceleration of teh elevator in upward direction.
By use of Newton's second law
R - mg = m a
R = m ( g + a)
840 = 76 ( 9.8 + a)
a = 1.25 m/s^2
Given :
- Mass of block = 3.5 kg
- Weight of Block = 3.5 kgf
- Volume of water displaced when body is fully immersed = 1000 cm³
Answer:
For calculating Upthrust on block we will have to first find out Volume of block :
↪Volume of block = Volume of water displaced
↪ Volume of block = 1000 cm³ = 0.001 m³
<h2>________________</h2>
Now, <u>we will calculate the Upthrust on block</u>:
↪ Upthrust on block = Volume of block * Density of water * g
↪ Upthrust on block = 0.001 * 1000 * g
↪ Upthrust on block = 1 kgf
