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Lesechka [4]
3 years ago
13

What are some properties of transverse waves?

Physics
1 answer:
allsm [11]3 years ago
5 0
They send out waves differently and cannot be heard easily
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Active immunity is passed on from a mother to her baby.
viva [34]
True.The immune system in babies. Antibodies are passed from mother to baby through the placenta during the last three months of pregnancy.
3 0
3 years ago
A child bounces a 60 g superball on the sidewalk. The velocity change of the superball is from 22 m/s downward to 15 m/s upward.
fgiga [73]

complete question:

A child bounces a 60 g superball on the sidewalk. The velocity change of the superball is from 22 m/s downward to 15 m/s upward. If the contact time with the sidewalk is 1/800 s, what is the magnitude of the average force exerted on the superball by the sidewalk

Answer:

F = 1776  N

Explanation:

mass of ball = 60 g = 0.06 kg

velocity of downward direction = 22 m/s = v1

velocity of upward direction = 15 m/s = v2

Δt = 1/800 = 0.00125 s

Linear momentum of a particle with mass and velocity is the product of the mass and it velocity.

p = mv

When a particle move freely and interact with another system within a period of time and again move freely like in this scenario it has a definite change in momentum. This change is defined as Impulse .

I = pf − pi = ∆p

F =  ∆p/∆t  =  I/∆t

let the upward velocity be the positive

Δp =  mv2 - m(-v1)

Δp =  mv2 - m(-v1)

Δp = m (v2 + v1)

Δp = 0.06( 15 + 22)

Δp = 0.06(37)

Δp = 2.22 kg m/s

∆t  = 0.00125

F =  ∆p/∆t

F =  2.22/0.00125

F = 1776  N

4 0
3 years ago
Ohm's law states which relationship between electrical quantities? a. Volts = current x resistance b. Volts = current divided by
miv72 [106K]

Answer:

a. Volts = current x resistance

Explanation:

Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.

Mathematically, Ohm's law is given by the formula;

V = IR

Where;

V represents voltage measured in voltage.

I represents current measured in amperes.

R represents resistance measured in ohms.

Hence, Ohm's law gives the relationship between voltage, current and resistance of an electric circuit.

7 0
2 years ago
A book sitting on a shelf has gravitational potential energy. true or false
Darya [45]

Answer:

False

Explanation:

A book resting on a shelf has no potential energy relative to the shelf, since it has height of zero meters relative to the shelf.

8 0
3 years ago
Read 2 more answers
Kyle's science class is doing an experiment to find out about the effects of different temperatures on Mexican jumping beans. Th
gizmo_the_mogwai [7]

Answer:

Yes, to educate other groups on possible measurement errors that can cause variation in results

Explanation:

Having divided the class in groups, the teacher expects the results of all groups if doing similar experiment to be within a certain range. In case Kyle's group never corrected the error, they could have results out of range as expected. It is prudent that the mistake be shared with the whole class so that in future there should not be a repeat of the same.

7 0
3 years ago
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