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pishuonlain [190]
3 years ago
15

I need help in question 7, a and b.

Physics
1 answer:
Nataly [62]3 years ago
7 0

Answer:

The graph for 7a is shown in the attachment. For question 7b she walks a distance of 16 meters. (m)

Explanation:

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You are sitting on the beach and wondering about the properties of mechanical waves. Describe them in terms of ocean waves.
Rudiy27

Answer:

The ocean waves is a mechanical wave that transmits mechanical energy in the wave by the synchronized and repeated oscillation of the waters about an equilibrium level such that as the wave approaches the shoreline, and the water depth decreases, the height of the wave also increases reflecting the effective transmission of energy while the medium which is the water through which the wave propagates, move back and forth within a small region

Explanation:

A mechanical wave like other waves is the oscillation of a field about an equilibrium level. In mechanical waves, the field consists of the oscillating matter such that the wave transmits energy through a medium. The displacement of the medium through which the wave energy is limited such that the wave energy is conserved to travel far.

7 0
4 years ago
Tĩnh lực tĩnh điện [lực cu lông] giữa 2 điện tích điểm q1,q2 biết q1=2.10-9 q2=4.10-9 r=3cm
Anettt [7]
  • q1=2×10^{-9}C
  • q2=4×10^{-9}C
  • Radius=3cm=0.3m

Using coulmb's law

\\ \bull\tt\dashrightarrow F=k\dfrac{q1q2}{r^2}

\\ \bull\tt\dashrightarrow F=8.98\dfrac{2\times 10^{-9}\times 4\times 10^{-9}}{(0.3)^2}

\\ \bull\tt\dashrightarrow F=8.98\dfrac{8\times 10^{-18}C^2}{0.09m^2}

\\ \bull\tt\dashrightarrow F=\dfrac{71.84\times 10^{-18}C^2}{0.09m^2}

\\ \bull\tt\dashrightarrow F=798.2\times 10^{18}Nm^2/C^2

\\ \bull\tt\dashrightarrow F=7.9\times 10^{16}Nm^2/C^2

6 0
3 years ago
During 57 seconds of use, 330 C of charge flow through a microwave oven. Compute the size of the electric current.
swat32

Answer:

5.78amps

Explanation:

Given data

Time t= 57 seconds

Charge Q= 330C

Current I= ??

The expression for the electric current is given as

Q= It

Substituting we have

330= I*57

I= 330/57

I=5.78 amps

Hence the current is 5.78amps

3 0
3 years ago
A circuit has a 10 Ω resistor connected to a 1.5 V dry cell. What is the current that can flow in the circuit?
ludmilkaskok [199]

Here is the highly detailed, arcane, complex, technical form of Ohm's Law that is needed in order to answer this question  ===>  I = V / R  .

Current = (voltage) / (resistance)

Current = (1.5 V) / (10 Ω)

<em>Current = 0.15 Ampere</em>

8 0
3 years ago
Imagine tying a string to ball and twirling it around you.how is this similar to the moon orbiting earth?in this example what is
guapka [62]
The changing force is you swinging the STRING
————-

this is similar because it’s on a set path and you are the earth and the gravitational pull is from the earth which the string represents
5 0
4 years ago
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