Suppose a 4.0-kg projectile is launched vertically with a speed of 8.0 m/s. What is the maximum height the projectile reaches?
A. 1.7 m
B. 3.3 m
C. 6.5 m
D. 13 m
help as quick as possible plz :(

Answer:

The unit of measurement of work is Nm which is also called as Joule and written J.

work done by the body builder against gravity = 3920J

Explanation:

work = force x displacement

force on barrel = 200 x gravity = 200 x 9.8 = 1960 N

displacement = 2m

work done against gravity = 1960 x 2 = 3920 J

Answer:

Yes alcohol is a hydrocarbon.

Alcohols are all derivatives of hydrocarbons in which one or more of the hydrogen atoms in the hydrocarbon have been replaced by a hydroxyl group.

By using the RAMP acronym, the students can examine and manage the risks connected with their diluting concentrated acid approach, resulting in a safer and more regulated experimental process.

To assess the risk of their planned procedure using the RAMP acronym, the best assessment for each letter would be as follows:

R - Recognize hazards: The students should identify and acknowledge any potential hazards associated with diluting concentrated acid.

A - Assess risks: The students should evaluate the risks associated with the procedure. This involves considering the probability and potential consequences of accidents or mishaps, such as acid splashes, improper handling, or inhalation of fumes.

M - Minimize risks: The students should take measures to minimize the identified risks. This includes implementing safety protocols and precautions.

P - Prepare for emergencies: The students should be prepared to respond to any potential emergencies or accidents that may occur during the procedure.

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Answer:

H,G,E,D,C,B,A,I,F

Explanation:

F is an ignious intrusion and I cross cuts H to A so it must be newer.

The pivot should be placed 1.31 m from the left end of the board to balance the seesaw when you sit on the left end and your friend sits on the right end, taking into account the mass of the board.

T1 = 90 kg * g * (x - 1.5 m)

T2 = 60 kg * g * (1.5 m - x).

T3 = Mg * (L/2 - x)

In the equilibrium position, we set the sum of the torques equal to zero:

T1 + T2 + T3 = 0

90 kg * g * (x - 1.5 m) + 60 kg * g * (1.5 m - x) + Mg * (L/2 - x) = 0

Simplifying and solving for x, we get:

x = (45 kg * L + 1.5 m * (90 kg - 60 kg)) / (M + 150 kg)

Substituting the values given in the problem, with M = 29 kg, we get:

x = (45 kg * 3.0 m + 1.5 m * 30 kg) / (29 kg + 150 kg)

x = 1.31 m

Torque is a measure of the force that causes an object to rotate around an axis or pivot point. It is often described as the rotational equivalent of force. The amount of torque an object experiences is dependent on both the magnitude and direction of the applied force, as well as the distance between the axis of rotation and the point where the force is applied.

The formula for torque is τ = r × F, where τ is the torque, r is the distance between the axis of rotation and the point of force application, and F is the magnitude of the applied force. Torque is typically measured in units of Newton meters (Nm) or pound-feet (lb-ft). Torque is an important concept in many areas of physics, including mechanics, engineering, and robotics. It plays a critical role in the operation of machines and engines, as well as in the movement and control of vehicles and aircraft.

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Answer:

I think the Answer is B. Longitudinal waves

The air you feel next to Earth's surface in the shade is heated by two main factors: indirect solar radiation and redirected solar radiation.

Indirect solar radiation refers to the process by which sunlight is absorbed by the Earth's surface and then re-emitted as heat. When the sun's rays reach the Earth, some of the energy is absorbed by buildings, pavement, and other objects. As these objects heat up, they release the absorbed energy as heat, which warms the surrounding air. This is why the air feels warm when you walk around the ASU Campus in the shade.

Redirected solar radiation also plays a role in heating the air near the Earth's surface. This occurs when sunlight is scattered or reflected by the atmosphere, clouds, or nearby objects, and then reaches the shaded areas. The redirected solar radiation contributes to the overall heating of the air, making it feel warm.

In conclusion, the air you feel next to Earth's surface in the shade is heated by indirect solar radiation, as the absorbed energy from the sun is released as heat, and redirected solar radiation, as sunlight is scattered or reflected and contributes to the warming of the air.

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Answer:

I hope it helped you...please mark as brainliest.....thanks!!!!!!!

Explanation:

Inches of mercury is ideal for vacuum lifting with vacuum cups, as the amount of vacuum required is rarely high. Typical vacuum handling utilizes anything between 15″Hg and 25″Hg. Therefore, “Hg is suitable as a measurement of system performance in this type of operation

The column of mercury employed in a mercury barometer, the height of which (inches of mercury) is used as a measure of atmospheric pressure.

At some point, all water vapour that is found in a vacuum system came from the atmosphere. Consider that air at 25° C and 50% relative humidity contains 12 torrs of water vapour. ... Additionally, any surface will adsorb a certain number of monolayers of water molecules.

Credits:

Vacuum Measurement: A Basic Guide - Fluid Power Journal

Sources of Water Vapor in Vacuum Systems | Normandale ...

Answer:

C

Explanation:

i did the test too

Answer:

Three states of matter exist—solid, liquid, and gas. Solids have a definite shape and volume. Liquids have a definite volume,

Explanation:

According to the information, the table is completed as follows: Do they have definite shape? no (vapor), no (water), yes (ice); Do they have definite volume? no (vapor), yes (water), yes (ice); Do they compress? yes (vapor), no (water), no (ice).

To fill the table to describe the characteristics of the states of matter we have to look for additional information of each state of matter and then complete the table. According to the information we can infer that the correct way to complete the table is:

Do they have definite shape? no (vapor), no (water), yes (ice); Do they have definite volume? no (vapor), yes (water), yes (ice); Do they compress? yes (vapor), no (water), no (ice).

Vapor | No | No | Yes

Water | No | Yes | No

Ice | Yes | Yes | No

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Answer:

In a straight line

Explanation:

Why, because of the power of inerta

Answer:

  I = 1.8 N s,  it is directed towards the right  

Explanation:

For this exercise we use the relationship between momentum and moment

         I = Δp

         F t = p_f - p₀

in this case the initial velocity is v₀ = - 2,0 m / s and final velocity v_f = 10,0 m / s, we assume the positive right direction

          I = m (v_f - v₀)

let's calculate

         I = 0.150 (10.0 - (-2.0))

         I = 0.150 (10 + 2)

         I = 1.8 N s

as the impulse is positive it is directed towards the right

Answer:

1,34 m/s

Explanation:

KE= 1/2 mv^2

massa = 3,6 × 10 ^4/ 10 ^3 kg = 36 kg

KE = 1/2 × 36 × v^2

32 × 2/36 = v^2

64/36 = V^2

√64/36 = V

V= 8/6

V = 1,34 m/s

60 arcseconds makes 1 arcminute and 60 arcminutes makes 1 degree. This can be converted by multiplying the decimal points by 60.

So 24.2 degrees = 24 degrees and 12 arcminutes

     1.56 degrees = 1 degree 33 arcminutes and 12 arcseconds

     0.1 degrees is 6 arcminutes

      0.01 degrees = 36 arcseconds

      0.001 degrees = 3.6 arcseconds

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Answer: 18.64114

Explanation:

Answer:

The lowest electrical voltage would be 100 volts.

Answer:

15 volts would be fatal

Answer:

B. radio waves

Explanation:

Trust me It's correct

Answer:

300 Newtons

Explanation:

Weight is the force of attraction between two bodies, one usually larger (like a planet), and one smaller (like a person). Force can be calculated using the formula: Force = mass × acceleration.

The mass here is 12kg, the acceleration, which in this case, is the acceleration due to gravity is 25m/s/s, by plugging in our values, we have

Force = 12 × 25 = 300 Newtons or 300 N for short.

The correct answer is A. an increase in Earth's average surface temperature.

While all of these are aspects of global warming, option A best summarizes it.

Answer:

Many forms of energy are carried in heat, light, sound, and water waves. Energy is defined as the ability to do work; all forms of energy can be transformed into work. ... Ocean waves offer a very large source of renewable energy. ... 4.18 A). When deep-water waves move into shallow water, they change into breaking waves

Explanation:

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Answer:

The Force between the two charges is an attractive force of 16,000N

Explanation:

Expression for the electric force between the two charges is given by

F = (k*q1*q2) / r^2

Here, k = constant = 9 x 10^9 N*m^2 / C^2

q1 = - 2.0x10^-4C

q2 = + 8.0x10^-4C

r = 0.30 m

Substitute the given values in the above expression -

One charge  is + and the other is a -, therefore the net force is an attractive force (opposites atract)

The attraction force is:

F= 9.0x10^9 * 2.0x10^-4 *8.0x10^-4 N/ 0.30^2

F= 16,000N

The force between the two charges will be 16,000 N.It is the force exerted by one charge on another charge.

The electric force between the two charges is directly propotional to the product of the charge and inversly propotional to the square of the distance between them.

The given data in the problem is;

q₁ is the megnitude of charge 1= - 2.0x10⁻⁴ C

q₂ is the megnitude of charge 2 = + 8.0x10⁻⁴ C

k is the propotionallity constant = 9 x 10⁹ Nm² / C²

r is the seperated distance = 0.30 m

F is the electric force=?

The electric force is found as;

\(\rm F = \frac{K q_14q_2}{r^2} \\\\ \rm F = \frac{9 \times 10^9 \times 2.0 \times 10^{-4}}{(0.30)^2} \\\\ \rm F = 16,000N\)

Hence the force between the two charges will be 16,000 N.

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When the air resistance equals 100 pounds, the acceleration of the sack will be: zero.

So, the correct answer is C.

When a 100-pound sack of potatoes falls from an airplane, it experiences gravitational force and air resistance.

The gravitational force acts downward, while air resistance acts upward.

As the velocity of the falling sack increases, the air resistance also increases. When the air resistance equals 100 pounds, it balances the gravitational force acting on the sack.

At this point, the net force acting on the sack is zero (100 pounds - 100 pounds = 0), as the air resistance and gravitational force cancel each other out.

According to Newton's second law of motion, F = ma, when the net force (F) is zero, the acceleration (a) is also zero.

Therefore, the correct answer is c. zero.

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When waves move from deep water to shallow water, the velocity of the waves decreases. The distance between the wave crest and the seabed decreases in shallow water, making it more challenging for the wave to move forward. As a result, the speed of the waves slows down.The waves bend as they come across the shallow water region because the water depth varies.

As a result, the wave front becomes warped resulting in a decrease in speed. As the wave enters shallow water its wavelength becomes shorter and its amplitude increases, but its frequency remains constant.The wave's velocity changes depending on the medium's density.

The denser the medium, the slower the wave travels, and vice versa. Since the speed of sound in water is quicker than that in air, sound waves travel faster through water than they do through air. As a result, the answer to the question is that the waves move slower through the second medium.

In the shallow water area, waves slow down and their shape changes. The energy of the wave is forced upward and outward, causing the wave to break. At the edges of the shallow area, the waves bend and change direction. As the waves come closer to shore, their circular motion causes them to collide with one another and pile up.

As a result, the waves become higher and steeper, resulting in a more turbulent environment for boats and swimmers.

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When we do, we make sure to measure our mass in kilograms. We determine that F is equal to 124.26 newtons by entering these numbers into our calculator.

That is the average magnitude of the force applied to the tennis ball.

The equation that Newton was referring to is shown by a serve. You can calculate the total force that was applied by the tennis racket to the ball by multiplying the weight of the racket by the speed at which the player swings their racquet.

An average 120-mph serve slows to 82 mph before the bounce, 65 mph after the bounce, and 55 mph at the opponent's racket, according to tennis instructor and analyst John Yandell.

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A strong magnetic field prevented the creation of charged particles or ions.

This is because the magnetic field exerts a force on charged particles, causing them to move in a circular path around the field lines, which in turn prevents them from combining and forming new particles or ions.

A strong magnetic field can have various effects on the physical and chemical processes occurring within a system, and can sometimes prevent the creation or modification of certain materials or structures.

One example of this is in the field of material science and engineering, where magnetic fields can be used to control the growth and alignment of crystalline structures in materials.

In some cases, a strong magnetic field can prevent the creation of certain materials altogether.

For example, when attempting to produce graphene using chemical vapor deposition (CVD), a strong magnetic field can disrupt the growth process and prevent the formation of the desired structure.

This is because the magnetic field can affect the movement and orientation of the precursor molecules, leading to a non-uniform growth pattern and the formation of defects in the graphene lattice.

Similarly, in certain chemical reactions, a strong magnetic field can alter the rate and outcome of the reaction, making it difficult or impossible to create certain products.

This is because the magnetic field can affect the spin states of the reacting molecules and alter their reactivity and selectivity.

Overall, a strong magnetic field can have significant and sometimes unpredictable effects on the creation and modification of materials and chemicals, and must be carefully considered and controlled in many research and industrial processes.

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If I move 3 m east and 4 m north, then my displacement would be 5m.

In geometry and mechanics, displacement is defined as a vector whose length is the shortest distance from initial to the final position of a point P undergoing the motion.

If an object moves relative to the reference frame—for example, if professor moves to the right relative to whiteboard or passenger moves toward the rear of airplane—then object's position changes. And this change in position is known as displacement.

Given AB= 3m east and BC= 4m north

AC= √ 3² + 4²= 25

So, AC, displacement = 5m

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Answer: 55 degrees celsius

Explanation:

The measured temperature of the mixture of water was 50°C.

When two physical systems are connected by a heat-permeable path, they are in thermal equilibrium if there is no net flow of thermal energy between them.

The zeroth law of thermodynamics governs thermal equilibrium. A system is said to be in thermal equilibrium with itself if the temperature within it is uniform and constant over time.

Initial temperature of 100 mL of water is 20°C

and Initial temperature of 100 mL of water is 80°C

Let at thermal equilibrium, temperature of the mixture is t° C.

Hence, at thermal equilibrium,

100 mL × ρ × ( t - 20°C) × s = 100 mL × ρ × ( 80°C -t) × s

t - 20° C = 80°C -t

2t = 100°C

t = 50°C

Hence, the measured temperature of the mixture of water was 50°C.

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Answer:

V=14

Explanation:

PE=KE

mgh=1/2mv^2

(2)(9.8)(10)=1/2(2)v^2

(radical) 196=(radical) v

V=14