Answer:
Explanation:
mass of alpha particle, m = 4 u = 4 x 1.67 x 10^-27 kg
charge, q = 2 e = 3.2 x 10^-19 C
radius, r = 3.45 cm
Magnetic field, B = 1.67 T
(a) let v be the speed
v = 2760000 m/s
(b) Let T be the period of revolution
T = 7.85 x 10^-8 seconds
(c) Kinetic energy, K =0.5 x mv²
K = 0.5 x 4 x 1.67 x 10^-27 x 2760000 x 2760000
K = 6.36 x 10^-15 J
(d) kinetic energy, K = e V
where, V is the potential difference
6.36 x 10^-15 = 1.6 x 10^-19 x V
V = 39754.35 V
Answer:
Oppressors have a repressive attitude toward others. They have a need for power and dominance.
Explanation:
Oppression is the painful experience of deliberate arbitrariness, violence and abuse of power inflicted on an individual, society or group of people. The term repression is often used synonymously for this.
Oppression arises from the general, also unconscious, assumption that a certain group of people is inferior or without rights. Oppression is seldom limited to governmental activities. Individuals can also be victims of oppression if they lack the solidarity of a social group.
Oppressive individuals, in turn, are those who exert repression on others. They are generally narcissistic and megalomaniacal people, who have a wrong self-perception of their virtues and negatively weigh the virtues of other people.
They absorb the energy of seismic waves.
Explanation:
Base - isolators, rubber and steel pads under buildings reduces earthquake damage by absorbing the energy of seismic waves.
- Earthquakes are produced by the sudden release of energy within the earth which causes displacement and sharp movement on earth surface.
- There are four main types of waves that are propagated by seismic waves which wrecks havoc.
- Understanding the waves and their properties has been useful in designing earthquake resistant structures.
- Base-isolators, rubber and steel pads helps to absorb seismic waves.
- When seismic waves are absorbed, they are cut off.
- This way they cannot cause damage.
learn more:
Earthquake brainly.com/question/6520403
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Each half is called a hemisphere
consider the motion of projectile A in vertical direction :
v₀ = initial velocity of projectile A in vertical direction = 0 m/s (since the projectile was launched horizontally)
a = acceleration of the projectile = g = acceleration due to gravity = 9.8 m/s²
t = time of travel for projectile A = 3.0 seconds
Y = vertical displacement of projectile A = height of the cliff = h = ?
using the kinematics equation along the vertical direction as
Y = v₀ t + (0.5) a t²
h = (0) (3.0) + (0.5) (9.8) (3.0)²
h = 44.1 m