<span>If the pitch of a sound increased, then the wave frequency increased. (D)</span>
Answer:
C. Protons have an electrical charge, but neutrons have no charge.
Explanation:
Protons and neutrons both are parts of nucleus and they stay inside the nucleus due to large nuclear force between them
Mass of proton and mass of neutron is almost same or in more precisely we can say that neutrons are slightly heavy than protons
mass of neutrons is 1.008 amu while mass of protons are 1.007 amu.
the main different between them is that protons are positively charged and their charge is same as that of charge of electron
while neutrons are electrically neutral and they do not have any charge on them.
so correct answer will be
C. Protons have an electrical charge, but neutrons have no charge.
Answer:
1.2 m/s
Explanation:
The puck in this problem is moving with uniform circular motion, so the net force acting on it (the tension in the string) must be equal to the centripetal force.
So we can write:
where:
T is the tension in the string
m is the mass of the puck
v is its tangential speed
r is the radius of the circular path
For the puck in this problem, we have:
m = 0.5 kg
T = 1.0 N
r = 0.7 m
Substituting and solving for v, we find the tangential speed:
Answer:
Spatial interference describes the correlation between waves at different points in space.
The two example of spatial interference are as following:
- alphanumeric characters can be easily identified in isolation but difficult to be identified when these characters are surrounded by optotypes because visual acuity will be reduced by crowded conditions that limit resolution at several stages of visual processing.
- Birds are able to identify visual target slowly that are presented at the top than to that same visual target presented at the bottom.
Hence, different waves in a space correlate result into Spatial interference.
Answer:
when new information disproving the current theory becomes available.
Explanation:
hope this helps..