Answer:
1.75 m/s
Explanation:
k = Spring constant = 490 N/m
m = Mass of object = 5.8 kg
x = Displacement of spring = 0.19 m
v = Speed of object at the equilibrium position
The potential energy of the spring will balance the kinetic energy of the mass
The speed of the mass as it returns to the equilibrium position is 1.75 m/s.
To solve the problem, we must use the following equation:
where
Q is the amount of heat energy absorbed by the water
m is the mass of the water
Ti and Tf are the initial and final temperature
Cs is the specific heat capacity of the water
The data we have in this problem are:
Q=40.0 kJ
m=0.500 kg
Substituting the data into the equation and re-arranging it, we find
So the final temperature of the water will be 29.1 degrees.
Size and Mass of the Nucleus
Electrons have virtually no mass, but protons and neutrons have a lot of mass for their size. As a result, the nucleus has virtually all the mass of an atom. Given its great mass and tiny size, the nucleus is very dense.
Answer:
a= (2.3 m/s) / (3.0s) = 0.77 m/s2F= ma20.0 N = m (0.77 m/s2)m = 26 kgForce is measured with?Newtons (N) --> 1 N = 1 kg m/s2
Explanation:
GET THAT A+ MISS GURL
Answer:
A) Periodic, B) v = λ f
, C) Decreases
, D) rad / s
, E) T = λ / v
Explanation:
A) Periodic
B) the equation that relates the speed of the wave is
v = λ f
C) λ = v / f
Decreases
D) the difference between frequency (f) and angular velocity
The frequency is in Hz
The angular velocity is in rad / s
E) the speed of the wave is
v = λ f
The frequency is the inverse of the period
F = 1 / T
v = λ / T
T = λ / v
F) the frequency and period are inverse
.f = 1 / T