Answer:
the sun is plasma
Explanation:
it is a hot ball of gas made out of oxygen
Answer:
(a) E = 73.5mJ
(b) v = 2.188 m/s
(c) KE = 55.1 mJ
(d) PE = 18.37mJ
Explanation:
m = mass of the object = 0.03 kg
k = spring constant = 30 N/m
A = amplitude = 0.07 m
For part (a)
The total energy of the system can be found by:
E = k × A² / 2
E = (30 N/m) × (0.07 m)² / 2
E = 0.0735 J
E = 73.5mJ
For part (b)
The elastic potential energy in the spring at position d = 0.0105 m is:
PE = k × d² / 2
PE = (30 N/m) × (0.0105 m)² / 2
PE = 0.00165375 J
The kinetic energy at that point is:
KE = E - PE
KE = (0.0735 - 0.00165375)
KE = 0.07184 J
So its speed is:
KE = m × v² / 2
v = √( 2 × KE / m )
v = √( 2 × (0.07184 J) / (0.03 kg) )
v = 2.188 m/s
For part (d)
The elastic potential energy in the spring at position d = 0.035 m is:
PE = k × d² / 2
PE = (30 N/m) × (0.035 m)² / 2
PE = 0.018375 J
PE = 18.37mJ
For part(c)
The kinetic energy at that point is:
KE = E - PE
KE = (0.0735J) - (0.018375 J)
KE = 0.0551 J
KE = 55.1 mJ
Complete Question
A proton is located at <3 x 10^{-10}, -5*10^{-10} , -5*10^{-10}> m. What is r, the vector from the origin to the location of the proton
Answer:
The vector position is
Explanation:
From the question we are told that
The position of the proton is
Generally the vector location of the proton is mathematically represented as
So substituting values
Answer:
F = 3116.49 N
Explanation:
given,
mass of the child = 15 kg
speed = 59 mi/hr
time taken to come to rest = 0.11 s
force on the boy = ?
1 mi/hr = 0.447 m/s
59 mi/hr = 59 × 0.447 = 26.37 m/s
a=239.73 m/s²
the calculation of force
Force = mass × acceleration
F = m × a
F = 13 × 239.73
F = 3116.49 N