1. In the circuit shown below, with each bulb holding a resistance of 100 ohms, how many amps of current are flowing? Express your number as a decimal. (See Figure)

2. Protons have positive charge, neutrons have negative charge, and electrons have no charge.

A. True
B. False

3. A complete electric circuit includes a voltage source, current, wires, and something to _________ the flow of current.

Answer: Option (b) is the correct answer.

Explanation:

According to ohm's law, the relationship between voltage, resistance, and current is that current passing through a conductor is directly proportional to the voltage over resistance.

Mathematically,           I = [tex]\frac{V}{R}[/tex]

From this relationship we can see that when we decrease the voltage, and do not change the resistance, the current will also decrease. As current is directly proportional to voltage and inversely proportional to resistance.

First, we need to calculate the total distance that the diver travelled. The diver jumped off a 10-meter tower and went 5 meters under the water. Therefore, the total distance travelled by the diver is 10 meters (from the tower) plus 5 meters (underwater), which equals 15 meters.

Next, we will determine the work done on the diver. The work done is equal to the change in potential energy, which can be calculated by multiplying the diver's mass by gravity and then by the total distance the diver travelled. Given that the diver's mass is 70kg and the acceleration due to gravity is 9.8m/s², the work done is 70kg * 9.8m/s² * 15m, which equals 10290 Joules.

Finally, we'll find the average resistance force exerted on the diver by the water. The work done on the diver is also equal to the average force times the distance. Therefore, the average force is the work done divided by the distance. When you divide the work done (10290 Joules) by the total distance travelled (15 meters), you get an average force of 686 Newtons.

Hence, the total distance travelled by the diver in water is 5 meters, the work done on the diver is 10290 Joules, and the average resistance force exerted on the diver by the water is 2058 Newtons.

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its A i know my science

Answer:

449.824 kg

Explanation:

F = Gm₁m₂/r²

Above equation can be used to find the gravitational force between two objects.

Here F is the Gravitational force. m₁ , m₂ are the masses of the objects and r is the distance between the objects. Let's take m₁ as the mass of the moon. Then m₂ is the mass of the satellite.

We are given that F = 324 N , m₁ = 7.3 * 10²²kg and r = 2.6 * 10 ⁶m.

              324  =  6.67×10⁻¹¹ × m₁ × 7.3×10²² / (2.6 × 10⁶)²

                  m₁ = 449.824 kg

Answer:

answer above is right just round its 450kg

Explanation:

The law is C.) Equal areas law

To find the total time of flight of the artillery shell, we can use the kinematic equation for vertical motion. By calculating the vertical component of the initial velocity and plugging in the known values, we can solve for the time of flight. Finally, we can convert the time to minutes by dividing by 60.

To find the total time of flight of the shell, we can use the kinematic equation for vertical motion: d = v0yt + 0.5gt2. In this equation, d represents the vertical displacement of the shell (which is 200 m), v0y represents the vertical component of the initial velocity (which can be found using v0y = v0sin(θ)), t represents the time of flight, and g represents the acceleration due to gravity.

Since the shell is fired at an angle of 62.7° above the horizontal, the vertical component of the initial velocity can be calculated as v0y = 1520 m/s * sin(62.7°). Plugging in the known values, we can solve for t.

Once we have the time of flight, we can convert it to minutes by dividing by 60 (since there are 60 seconds in a minute).

Answer:

A or B (mostly A)

Explanation:

After 14 billion years, approximately 85% of the original parent isotope will still exist, compared to roughly 45% of parent isotope C, 12.5% of parent isotope B, and nearly none of the parent isotope A!

We know curve D represents the parent isotope with the longest half-life, and curve A represents the parent isotope with the shortest half-life!

We also know it cannot be D or C. So we are stuck with curves B and A! However, since parent isotope B has 12.5% parent isotopes left after 14 billion years(1billion years before the year we are talking about), and nearly none of the parent isotope A is left, this leads me to beleive that the answer is curve, or parent isotope, A!

I am sorry if i am wrong though.

Have a marvelous day!

ind the velocity my using the conservation of energy mgh=1/2mv^2. At the bottom, the mass is turning in a circle with tension pointing up towards the center of the circle and weight pointing down. Use the centripetal force requirement mv^2/r=T-W and solve for T. Hope this helps.

The speed of the mass at the bottom of its path is approximately 6.51 m/s, and the tension in the string at that point is approximately 141.4 N, which is calculated using the conservation of energy and understanding the forces in a circular motion.

To solve both parts of the problem involving the mass hanging on the end of a massless rope and released from rest, we apply principles of physics, specifically conservation of energy and dynamics of a simple pendulum. Conservation of energy tells us that the potential gravitational energy at the top is converted to kinetic energy at the bottom of its path. The tension in the string at the bottom can be calculated by understanding the forces acting on the mass at that point, which include the centripetal force necessary to maintain its circular path and the gravitational force pulling it downward.

Using conservation of energy, we have:

Potential Energy at top (U): U = mgh = mgL

Kinetic Energy at bottom (K): K = 1/2 m[tex]v^2[/tex]

Setting U equal to K gives us:

mgL = 1/2 m[tex]v^2[/tex]

From which we can solve for v, the speed at the bottom:

v = [tex]\sqrt{2gL}[/tex]

Substituting in the values (g = 9.8 m/[tex]s^2[/tex], L = 2.16 m),

v = [tex]\sqrt{2 \times 9.8 \times 2.16} = \sqrt{42.336} \approx 6.51 m/s[/tex]

The tension in the string (T) at the bottom is the sum of the gravitational force and the centripetal force required to keep the mass moving in a circle:

T = mg + m[tex]v^2[/tex]/L

Substituting in the known values:

T = 4.6 × 9.8 + 4.6 × [tex](6.51)^{2/2.16}[/tex]

T = 45.08 + 4.6 × (42.3961)/2.16

T = 45.08 + 96.3273

T = 141.4073 N

The tension at the bottom of the path is approximately 141.4 N.

Answer:

4

Explanation:

Final answer:

A moving truck has more kinetic energy than a parked truck.

Explanation:

In physics, potential energy is the energy that an object possesses due to its position or condition. When comparing a moving truck and a parked truck, the moving truck has more kinetic energy than the parked truck.

Internal energy is the total potential and kinetic energies in a substance, and thermal energy is the part of internal energy that can be transferred to another substance. The answer on edge would be C.

The correct answer you are looking for is "A". Have a great day!

Answer:a

Explanation:test

Answer: pitch

Explanation:

Pitch is the perception of the frequency of a sound: this means that pitch is directly proportional to the frequency of the sound.

Therefore, if the frequency of the sound wave increases, the pitch increases as well.

33 60 

--- 

1980 33*60sec = 1980 sec for comparison

By definition, we have to:

[tex] vf = a * t + vo
[/tex]

Where,

vf: final speed

vo: initial speed

t: time

a: acceleration

Clearing the acceleration we have:

[tex] a = \frac{vf-vo}{t}
[/tex]

When replacing values we have to take into account two things:

1) Assume that the given speeds are positive

2) The time must be in seconds

The time in seconds is:

[tex] t = 33 * 60

t = 1980
[/tex]

Then, replacing values we have:

[tex] a =\frac{7.1-2.7}{1980}
[/tex]

[tex] a = 0.002 \frac{m}{s ^ 2}
[/tex]

Answer:

The average acceleration of the treadmill during this period is:

[tex] a = 0.002 \frac{m}{s ^ 2}
[/tex]

Galileo discovered that the orbits in which planets move around the Sun are elliptical.

false

Answer: False

Explanation:

Galileo proved the heliocentric model by studying the position of Venus. He believed the sun to be center and all other bodies revolved around it in circular orbits which was disproved by Kepler. Kepler developed laws of planetary motion. One of which states that planets revolve around Sun in elliptical orbits with Sun at one of its foci. Thus, the given statement is false.

it would decrease the distance

The correct answer is - a. was a sign of danger.

Once the people saw that the ocean waters are receding and were living vast space without water behind them, they knew that something big and very dangerous will happen. And in fact it did. The water that was sucked in in the place were there was a crack on the ocean floor, got shot back under big pressure and it had very big speed, as well as having waves that were destroying anything on their way.

Answer:

Option (A)

Explanation:

Tsunamis are the series of large waves that are generated in the large water bodies such as seas and oceans, due to an earthquake, underwater explosion or landslide. These waves can rise up to a height of about hundreds of meters.

A receding ocean is a sign of danger that signifies that a tsunami is approaching. During this time the water level drops down unusually along the coastline. It is a kind of warning that is given to the people living in the coastal areas to evacuate it as soon as possible in order to save their lives.

Thus, the correct answer is option (A).

Answer:

The inner core is solid.

The outer core is liquid and moving.

Earth’s core is composed of iron and nickel.

Explanation:

Convection currents are produced in the outer liquid core. This motion together with the Earth's rotation creates a system of electrical currents, since it is composed of metals such as iron and nickel. The magnetic fields generated by the electric currents align, creating the Earth's magnetic field. The solid inner core acts as a stabilizer of the magnetic field generated by the liquid outer core.