Density = Mass / Volume
Volume = Area x Length = (4.50 x 5.20) x 6.00 = 140.4
Density = 1587 x 140.4 = 222,814.8 g/cm3 (cubed)
222,814.8 / 1000 = 222.8148 kg/m3 (cubed)
Answer:
A) A buoy rises in the water as a boat speeds past.
Explanation:
The passing boat transfers energy in the form of a wave. Other options illustrate other physics concepts like gravity (falling egg) or Newton's law (for every action, there is an equal and opposite reaction).
Explanation:
It is given that,
Total charge carried in a bolt, q = 31 C
Time taken,
Let I is the magnitude of current flowing in a bolt. The total charge flowing per unit time is called electric current. Mathematically, it is given by :
I = 12916.66 A
Let n is the number of electrons. According to the quantization of charges,
q = ne
e is the charge on electron
Hence, this is the required solution.
<span>for two bodies that are in physical contact with each other to be in thermal equilibrium the condition is that they require the same temperature and they no longer effect each other temperature
hope it helps</span>
Answer:
78.4 KN/m
Explanation:
Given
mass of person 'm' =80 kg
car dips about i.e spring stretched 'x'= 1 cm => 0.01m
acceleration due to gravity 'g'= 9.8 m/s^2
as we know that,in order to find approximate spring constant we use Hooke's Law i.e F=kx
where,
F = the force needed
x= distance the spring is stretched or compressed beyond its natural length
k= constant of proportionality called the spring constant.
F=kx
---> (since f=mg)
mg=kx
k=(mg)/x
k=(80 x 9.8)/ 0.01
k=78.4x
k=78.4 KN/m