What is the net charge (overall or sum of charges) of the nucleus and what number is it equal to?

Answers

Answer 1

Answer: Because the nucleus is made up of positively charged protons and neutrally charged neutrons, and no negatively charged particles, the charge of the nucleus will always be equal to the sum of the charges of its protons. A simpler way to say it is because each proton has a +1 charge, the charge of the nucleus will be the same as the number of protons in it.

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An oscillator makes 360 vibrations in 3 minutes.a. How many vibrations does it make in two minutes?b. How many vibrations does it make in five seconds?c. What is its period in seconds?d. What is its frequency in hertz?
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A car accelerates uniformly from rest to a speed of 10 meters per second in2 seconds. The acceleration of the car is A 0.2 m/sec² B 5 m/sec² C10 m/sec² D 20 m/sec2 An object starting from rest accelerates at a rate of 3.0 meters/seconds squared for the obiect at the end of this time is

If you put a pot on the stove, the pot becomes hot. The heat is transferred to the pot on the burner by radiation. Please select the best answer from the choices provideda. True
b. False

Answers

The answer is False. The example of heat transfer in this problem is not by radiation, but by conduction. This is because the pot is put directly on the surface of the stove, which is what conduction is - direct contact between two surfaces at different temperatures. Radiation, on the other hand, involves heat transfer by electromagnetic waves such as heat from the sun to the Earth.

If you put a pot on the stove, the pot becomes hot. The heat is transferred to the pot on the burner by radiation. the answer is false

The splitting of an atom to produce energy is called a ________ reaction.a. fusion
b. fission
c. physical
d. chemical

Answers

The correct answer is fission.

Answer: The answer to this question is fission

Explanation: Can I get brainliest

Passengers fall forward when a bus suddenly stops. Using your knowledge of Newton's First Law and Inertia, explain why this phenomenon happens.

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Answer:

The people on the bus fall forward because Newton's Law of Inertia states that and object in motion with stay in motion or an object at rest will stay at rest unless acted in by another force. The force of the bus stopping suddenly caused the passengers to fall forward because they were at rest position.

A series circuit contains two devices, one with a resistance of 10 ohms and one with a resistance of 4 ohms. If the generator supplies a voltage of 42 V, what is the magnitude of the current? A. 2 A B. 3 A C. 1.75 A D. 1.33 A

Answers

First you calculate the total resistance. Since the resistors are connected in series, the total equivalent resistance is:
Rtotal = R1 + R2 = 10 + 4 = 14 ohms

Now you calculate the electrical current with Ohm's law:
I = U/Rtotal = 42/14 = 3A

Correct answer: B. 3 A

The city police are in pursuit of Robin Banks after his recent holdup at the savings and loan. The high-speed police chase ends at an intersection as a 2080-kg Ford Explorer (driven by Robin) traveling north at 22.6 m/s collides with a 18400-kg garbage truck moving east at 10.4 m/s. The Explorer and the garbage truck entangle together in the middle of the intersection and move as a single object. Determine the post-collision speed and direction of the two entangled vehicles.

Answers

Answer:

$v=9.6215m/s\n\theta=13.8^o$

Explanation:

This problem is an example of a perfectly inelastic collision. After the collision, the two cars merge into a single object. So in order to find the velocity of that object, we need to find the velocity of the center of mass of the given system of 2 cars.

Mass of Ford = $m_F$ = 2080 kg

Mass of truck = $m_T$ = 18400 kg

Velocity of Ford = $v_F$ = 22.6 m/s north

Velocity of truck = $v_T$ = 10.4 m/s east

Let us break up the velocity vector into 2 components, one along north ( $v_N$ ) and one along east ( $v_E$ ).

Therefore,

$v_N=(m_Fv_F_(north)+m_Tv_T_(north))/(m_F+m_T) =((2080*22.6)+(18400*0))/(2080+18400) =2.2953m/s$

(speed of truck along the north is zero)

Similarly,

$v_E=(m_Fv_F_(east)+m_Tv_T_(east))/(m_F+m_T) =((2080*0)+(18400*10.4))/(2080+18400) =9.3437m/s$

(speed of Ford along the east is zero)

Hence, the resultant speed of the entangled cars is given by,

$v=√(v_N^2+v_E^2) =√(2.2953^2+9.3437^2)m/s=9.6215 m/s$

and the direction is given by (please refer to the figure attached),

$\theta=tan^(-1)((v_N)/(v_E) )=tan^(-1)((2.2953)/(9.3437) )=13.8^o$

Final answer:

The post-collision speed and direction of the two entangled vehicles, calculated using principles of momentum conservation and trigonometry, are found to be 9.82 m/s and 76.4 degrees east of north respectively.

Explanation:

In this scenario, we are dealing with the principles of momentum conservation. In a collision like this one, the total momentum before the collision equals the total momentum after the collision, as long as no external forces are acting on the system. The momentum (p) of an object is calculated as the mass (m) of the object multiplied by its velocity (v), or p=mv.

Before the collision, the total momentum of the system (ptotal) is the sum of the momentum of the Ford Explorer (pExplorer) and the garbage truck (ptruck). After the collision, they move together as a single object, so their combined mass and velocity would make up the total momentum.

Based on the given information, pExplorer = 2080 kg * 22.6 m/s = 47,008 kg*m/s and ptruck = 18400 kg * 10.4 m/s = 191,360 kg*m/s. The direction should also be taken into account. Since they are perpendicular to each other, we can use the Pythagorean Theorem to find the resultant momentum: (pExplorer)^2 + (ptruck)^2 = ptotal^2, which gives a total momentum of 201,262.8 kg*m/s.

Now, the total mass (mtotal) of two entangled vehicles is 2080 kg + 18400 kg = 20480 kg. Hence the velocity (v) of the two vehicles after the collision is calulated by ptotal divided by mtotal : 201262.8 kg*m/s / 20480 kg = 9.82 m/s. The direction is calculated using trigonometrics such as tan(-1)(ptruck / pExplorer) which gives a direction of 76.4 degrees east of north.

Learn more about Momentum Conservation here:

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Which of these statements is true? A.
Some molecules may contain no atoms.

B.
Some elements found in nature exist as molecules.

C.
Some compounds include only one type of element.

D.
Some atoms are made of two or more different elements.

Answers

B). Some elements found in nature exist as molecules.
That is, their atoms travel around in bound pairs.
Examples are Hydrogen, Oxygen, and Nitrogen.

A). No. Without atoms, you can't make a molecule.

C). No. A compound is a chemical combination of two or more elements.

D). No. An atom is the smallest unit of ONE single element.

Hello, your answer is, C. Some compounds include only one type of element.

I hope it helped!

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