Explanation:
The mass of electron,
The mass of neutron,
The De-Broglie wavelength is given by :
p is the momentum, p = m v
For electron,
For neutron,
Since, an electron and a neutron have the same de Broglie wavelength. So,
The mass of electron is less than the mass of neutron. So, the speed of electron is more than than the speed of neutron. As the kinetic energy is directly proportional to the mass. So, the correct option is (a) The electron has more kinetic energy and a higher speed.
In order to find the force (F), you would have to use the formula for it:
F=ma
where m is mass and a is acceleration.
In the problem, the mass is 2.85kg and the acceleration is 4.9m/s^2.
Therefore,
F=2.85kg(4.9m/s^2)
F=13.965kg(m/s^2)
Since N=kg(m/s^2)
F=13.965N
And because the problem requires that we use only 2 significant figures,
F=13N
Therefore, the student must exert 13N of force.
<span>Your answer is highland</span>
Answer:
Explanation:
A)
v² = u² + 2as
a = (v² - u²) / 2s
a = (0² - 370²) / (2(0.130))
a = -526,538 m/s²
B)
t = v/a
t = 370 / 526538
t = 0.0007027... s or 0.7 ms
C)
F = ma
F = 0.00175(526,538) = 921.442307... = 921 N
The cell probably needs protien and minerals (or vitamins too)