What is the net force on this box?
100 N
80 N
90 N
1
100 N

Answer:

36g

Explanation:

Given parameters:

Number of moles of H₂O = 2moles

Unknown:

Mass of  H₂O = ?

Solution:

To solve this problem, use the expression below:

   Mass of  H₂O = number of moles x molar mass

Molar mass of  H₂O = 2(1) + 16  = 18g/mol

  Mass of  H₂O = 2 x 18  = 36g

Answer:

The diameter of the gold nucleus is 3.0 × 10⁻⁵ nm

Explanation:

The given parameter of the gold atom are;

The diameter of the gold atom = 1/6,000 × The diameter of the atom

The diameter of a gold atom = 0.18 nm

The diameter of the gold nucleus, [tex]d_{Gold -nucleus}[/tex] = 1/6,000 × 0.18 nm = 0.00003 nm

∴ The diameter of the gold nucleus, [tex]d_{Gold -nucleus}[/tex] = 0.00003 nm = 3.0 × 10⁻⁵ nm.

Answer:

a) [tex]m = \frac{2\cdot E_{k}}{v^{2}}[/tex], b) [tex]v^{2} = \frac{2\cdot E_{k}}{m}[/tex], c) [tex]v = \sqrt{\frac{2\cdot E_{k}}{m } }[/tex]

Explanation:

a) Translational kinetic energy ([tex]E_{k}[/tex]), measured in joules, is represented by the following expression:

[tex]E_{k} = \frac{1}{2}\cdot m \cdot v^{2}[/tex] (1)

Where:

[tex]m[/tex] - Mass, measured in kilograms.

[tex]v[/tex] - Velocity, measured in meters per second.

Now we clear the mass within the formula:

[tex]E_{k} = \frac{1}{2}\cdot m\cdot v^{2}[/tex]

[tex]2\cdot E_{k} = m\cdot v^{2}[/tex]

[tex]m = \frac{2\cdot E_{k}}{v^{2}}[/tex]

b) Now we clear the velocity squared:

[tex]v^{2} = \frac{2\cdot E_{k}}{m}[/tex]

c) Now we clear the velocity:

[tex]v = \sqrt{\frac{2\cdot E_{k}}{m } }[/tex]

Answer:

D.

Explanation:

Entropy is the measurement of disorder in a system. The greater the entropy the more disorder/mess there is. Options A B and C all have organized systems so D is the only one with the least orderly scenario

Scattered over the ground represents the highest entropy of a deck of playing cards.

Entropy is a thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system.

Entropy is the measurement of disorder in a system. The greater the entropy the more disorder/mess there is. Options A,B and C all have organized systems so, D is the only one with the least orderly scenario

Hence, the option D is correct.

Learn more about entropy here:

Lhttps://brainly.com/question/24278877?referrer=searchResults

Answer:

they share electrons between them.

Explanation:

taking the test rn lol i think its right

Answer:

Explanation:

The pendulum is at rest ( or balance due to the equal action of opposing forces).

Answer:

Equilimbru or maximum displacement is question.

Answer:

The amount of each gas that can dissolve in the ocean depends on the solubility and saturation of the gas in water. Solubility refers to the amount of a dissolved gas that the water can hold under a particular set of conditions, which are usually defined as 0o C and 1 atmosphere of pressure.

Explanation:

hope this helps

Answer: the motion of the air above the ocean water

Explanation:

Answer:

a.ionic bond is kinds of bonds make up a formula unit of sodium chloride.

Answer:

A

Explanation:

Answer:

[tex]s_2=-806m[/tex]

Explanation:

From the question we are told that

Velocity 1 [tex]v=1.34m/s \angle west[/tex]

Distance  [tex]d=6.44km=>6440m[/tex]

Velocity 2  [tex]v_3=2.68m/s[/tex]

Velocity 3  [tex]v_3=0.447m/s \angle east[/tex]

Generally the equation for VT is mathematically given by

[tex]VT=v_1t_1 +V_2t_2[/tex]

[tex]VT=2.68(2400)-0.447t_2[/tex]

[tex]1.34t_1+1.34t_2=2.68(2400)-0.447t_2[/tex]

[tex]t_2=1804s[/tex]

Therefore

[tex]s_2=v_2t_2=(-0.447)(1804)[/tex]

[tex]s_2=-806m[/tex]

Answer:

Mass, m = 20000 kg

Explanation:

The force acting on the shark, [tex]F=2.5\times 10^4\ N[/tex]

Acceleration of the shark, a = 1.25 m/s²

We need to find the mass of the Shark. The force acting on an object is given by :

F = ma

m is the shark's mass

So,

[tex]m=\dfrac{F}{a}\\\\m=\dfrac{2.5\times 10^4}{1.25}\\\\m=20000\ kg[/tex]

So, the mass of the Shark is 20000 kg.

Answer:

ology

Explanation:

Answer:

I found it would be quadrupled if it was doubled

Explanation:

The kinetic energy of an object is the energy possessed by the object due to its motion. It is given by:

where

m is the mass of the object

v is its speed

From the equation, we notice that the kinetic energy is:

Directly proportional to the mass

Proportional to the square of the speed

In this problem, the initial kinetic energy of the object is

K = 100 J

Later, the speed of the object is doubled:

v' = 2v

Therefore, the new kinetic energy will be

So, we see that the kinetic energy will quadruple.

Answer:

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. ... For instance, chemical energy is converted to kinetic energy when a stick of dynamite explodes.

Explanation:

The speed of sound in air is twice the temperature of the air

Answer: The speed of sound in air is twice the temperature of the air

Explanation:

Answer:

bla bla bla

Explanation:

it will give the people who answer the points or brainliest!

Answer:

dryer, scissors, ramp, axe, metal detector, rake, stairs, lid, soccer ball, and egg beater

Explanation:

btw its in that exact order plz make me brainliest

The type of simple machines which are shown in the following image include the wheel and axle, pulley, inclined plane, screw, wedge, and lever.

A simple machine is a mechanical device which is responsible for the changes in the direction or magnitude of a force. In general, simple machines can be defined as the simplest mechanisms which can use mechanical advantage to multiply force.

Simple machines which are widely used in daily works include the wheel and axle, pulley, inclined plane, screw, wedge, and lever.

Learn more about Simple machine here:

https://brainly.com/question/10075890

#SPJ2

Answer:

★ For example, cold water has a higher density than warmer water. In Addition, water gets colder with depth because of the coldness, of the salty ocean water which sinks to the bottom of the ocean basins below the less dense water near the surface

Explanation:

Hope you have a great day :)

Answer:

explain this

Explanation:

Answer:

2 they detect radio waves

Answer:

See Explanation

Explanation:

Given

Cyclist 1:

[tex]Distance = 40km[/tex]

[tex]Time = 2hr[/tex]

[tex]Direction = East[/tex]

Cyclist 2:

[tex]Distance = 10km[/tex]

[tex]Time = 0.5hr[/tex]

[tex]Direction = West[/tex]

The question requires options. Since none is given,  I'll answer on a general term.

First, calculate the speed of both cyclists

[tex]Speed = \frac{Distance}{Time}[/tex]

Cyclist 1:

[tex]Distance = 40km[/tex]

[tex]Time = 2hr[/tex]

[tex]Speed = \frac{40km}{2hr}[/tex]

[tex]Speed = 20km/hr[/tex]

Cyclist 2:

[tex]Distance = 10km[/tex]

[tex]Time = 0.5hr[/tex]

[tex]Speed = \frac{10km}{0.5hr}[/tex]

[tex]Speed = 20km/hr[/tex]

The following can be deduced from above:

Answer:

True

Explanation:

Answer:

that is very much true im pretty sure

(edit I was wrong its false)

2800 m

Given

time = 80 s

average velocity = 35 m/s

Required

total distance before it broke down

Solution

Average velocity : total displacement : total time

Can be formulated

avg velocity = Δx : Δt

Input the value :

Δx=avg velocity x Δt

Δx = 35 m/s x 80 s

Δx = 2800 m

In addition, if we are asking for velocity, we must know the starting and ending points (displacement)

But if we calculate the total distance, what is written is the average speed

avg speed = total distance : total time