Answer:
a) If the mass get double then the potential of the spring gets four times.
b) P'=3.848 J
Explanation:
Given that
P= 0.962 J
m = 3.5 kg
m'= 7 kg
Lets take extension in the spring is x when the mass 3.5 kg is attached to the spring.
m g = K x
K=Spring constant
We know that potential energy given as
If the mass get double then the potential of the spring gets four times.
P'= 4 P
When mass ,m' = 7 kg
Then potential will be
-----1
-------2
From equation 1 and 2
P'= 4 x 0.962 J
P'=3.848 J
<u>Given data:</u>
wave length (λ) = 22 cm = 0.22 m,
speed of wave length(v) = 4 m/s ,
determine the frequency (f) = ?
We know that ,
wave length and frequency of light are closely related. The higher the frequency, shorter is the wavelength and vice-versa.
Mathematically, <em> λ = v/f -------------------- (i)</em>
<em> </em> where, λ = wave length (m)
v = speed of wave length (m/s)
f = frequency (Hz)
From the equation<em> </em><em>(i) </em>,<em> </em>
<em> </em><em>frequency (f) = v/λ</em>
= 4 / 0.22
= 18.18 /second
frequency (f) of the wave is 18 /sec or (18 Hz)
<em>Note:</em> frequency is defined as "<em>number of occurrences per unit time",</em> measured in<em> Hz</em>.
Answer:
True
Explanation:
The main differences between a physical property and a chemical property are mentioned below:
A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points.
While A chemical property describes the ability of a substance to undergo a specific chemical change.
There are five steps that you should do before starting the engine after fueling:
1. Put the fill cap securely to stop vapors from escaping.
2. Wipe any spilled fuel and properly dispose of the rags you've used.
3. Open all windows, ports, doors, and any other openings in your boat.
4. If your boat has a power ventilation system or also known as exhaust blower, turn it on for about 4 minutes before starting your engine. This will help remove fuel vapors in the bilge.
5. Lastly, before starting the engine, sniff the bilge and engine compartment for any fuel vapors. Continue to ventilate until you cannot smell the fuel vapors anymore.
After doing these steps, you can now start the engine and reload your passengers.