Work out the current flowing when charge is transferred at a rate of:

a) 4.5 C every second
b) 192 C per minute
c) 16.56 kC an hour
d) 1.8 C every 0.6 s
e) 3.2 C every 1.6 s
f) 33.8 C every 2.6 s
g) 147.2 C every 23 s
h) 7920 C every 15 minutes
i) 900 C every half an hour​

Answer:

Increase is energy transferred

Explanation:

Option B is correct

Answer:

ans for A)

Ball A being negatively charged and Ball B being neutral

when they come into contact.... electrons from the ball A will transfer to ball B and since they are covered by an electrical conductor... their contact will form a joint pathway for electric charge to be transferred to another object.

Answer: i think A

Explanation:

The primary reason why scientists want to develop soft robots is option A: to handle fragile or easily-damaged materials. Option A

Soft robots have the potential to revolutionize various industries. In fields such as manufacturing, healthcare, and agriculture, there is a need to handle delicate objects or perform tasks in environments where rigid robots may cause damage or be ineffective.

Option B also aligns with the reasons for developing soft robots. They can aid in surgery and search and rescue efforts. Soft robots' compliant nature allows them to navigate through tight spaces, maneuver around obstacles, and interact safely with human tissues.

In minimally invasive surgeries, soft robots can perform precise and controlled movements, reducing the risk of trauma to patients. In search and rescue scenarios, soft robots can access complex environments and provide assistance in locating and rescuing individuals in confined or hazardous areas.

Options C and D, however, do not pertain to the primary reasons for developing soft robots. While advancements in flexible electronics may be a byproduct of soft robotics research, it is not the central motivation. Similarly, eliminating fluid-based transistors and diodes is not a direct goal of soft robotics. Option A.

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Acceleration due to gravity is 9.8 m/s² then the book weighs 3.06 kg in total.

where d denotes the separation between the object's and the earth's centers. The acceleration of gravity is denoted by the symbol g in the first equation above. Its value on Earth is 9.8 m/s2. Alternatively put, the acceleration of gravity at sea level on earth's surface is 9.8 m/s2. Weight of a body on the moon is calculated as follows: mass of the body x lunar gravitational acceleration (30 x 1.62 = 48 N).

Mass times Gravitational Acceleration equals weight.

Weight plus gravitational acceleration equals mass.

mass = 30N ÷ 9.8 m/s²

mass = 3.06 kg

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The shift of blackbody curves can be described by Wien's displacement law, which states that the peak wavelength of the emission from a blackbody radiator is inversely proportional to the absolute temperature of the radiator.

When you compare the blackbody curves of very hot objects with much cooler objects, there will be a shift towards the left side of the x-axis (wavelengths). The blackbody curves of hot objects will have a higher maximum emission value. This shift is because the temperature of an object determines the amount of radiation emitted by it, and the wavelength at which this radiation is emitted. In other words, as the temperature of an object increases, the maximum amount of radiation emitted will also increase. The Wien's displacement law can help in describing the shift of blackbody curves when objects of different temperatures are compared.The shift of blackbody curves when objects of different temperatures are compared can be explained using the Wien's displacement law. This law states that the peak wavelength of the emission from a blackbody radiator is inversely proportional to the absolute temperature of the radiator.

As the temperature of an object increases, the peak wavelength of the radiation emitted will decrease. This means that the blackbody curve will shift towards the left side of the x-axis (wavelengths) and will have a higher maximum emission value.

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Answer:

When acted upon by a force.

Explanation:

"If a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force."

During the planet formation process, runaway growth of planetesimals is enabled by the higher densities of material interior to the snowline. The correct option is C.

The formation of planets in a protoplanetary disk involves the accumulation and collision of small objects called planetesimals. The process of runaway growth refers to the stage where planetesimals experience rapid and significant growth, leading to the formation of larger bodies.

1. Gravitational focusing: Gravitational focusing occurs when the gravitational pull of a planetesimal attracts other nearby planetesimals. This effect increases the effective cross-sectional area of a planetesimal, making it more likely to capture other planetesimals through collisions.

2. High velocities of other planetesimals: The high velocities of other planetesimals can lead to destructive collisions rather than constructive ones. These high velocities make it difficult for planetesimals to merge and grow in size.

3. Higher densities of material interior to the snowline: The snowline is the boundary in the protoplanetary disk where the temperature is low enough for volatile compounds, such as water, to condense into solid ice. Beyond the snowline, the planetesimals contain more volatile-rich material.

However, interior to the snowline, the density of material is higher due to the presence of non-volatile compounds. This higher density promotes more efficient accretion and growth of planetesimals.

During the runaway growth phase, the higher densities of material interior to the snowline play a crucial role. The increased density increases the gravitational attraction between planetesimals, enhancing their chances of collision and subsequent merging. This process allows for the rapid growth of planetesimals and the formation of larger bodies, eventually leading to the formation of planets.

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Answer:

velocity

Explanation:

Unbalanced forces on an object cause it to accelerate.  Acceleration is a change in velocity over time.

Answer:

a

Explanation:

none

The physical quantity that is constant during the process when a constant load P is applied to ball A is the acceleration of the center of mass of the system. The correct option is B.

During the process, the net external force on the system is zero because the force acting on the spring is equal and opposite to the force acting on the ball A. Since there is no external force acting on the system, the acceleration of the center of mass of the system is zero, making it the constant physical quantity during the process.

Therefore, acceleration of the center of mass of the system is constant during the process when a constant load P is applied to ball A.

Find the complete question below,

The constant load P is applied to ball A as shown. As a result the system moves to the right on the smooth surface and during the process the spring stretches and contracts. What physical quantity is constant during the process?

A. Velocity of the center of mass of the system

B. Acceleration of the center of mass of the system

C. Velocity of ball B Velocity of ball A

D. Acceleration of ball A

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The RMS current , Power and Maximum voltage have values 0 to 1 , V1/2 to 0 and infinity to zero.

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Answer:

Explanation:

(1) The surface area of the electrodes: Larger the surface area of the electrodes, less is the internal resistance.

(2) The distance between the electrodes: As the distance between the electrodes increases, the internal resistance of cell also increases.

The formula is given by

\(\\ \rm\Rrightarrow R=\rho\dfrac{\ell}{A}\)

On these three factors resistance depends

also

According to ohms law

Resistance also depends on voltage and current

Answer:

Explanation:

The answer will be the 1.66N

According to the 1 equation of motion:

v=u+at; where v=final velocity, u=initial velocity, a= acceleration, t=time

According to the given value in question

0=5+a*0.60

a= -5/0.60

a=-13.88m/s2

Now according to the Newton’s 2 law

F=ma; where F=force, m=mass

F=0.12*13.88

F=1.66N

So, the average resultant force acting on the stone while it is being fired will be 1.66N.

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\(\purple{ \longrightarrow \bf{h_m = \dfrac{ {v}^{2} \: {sin}^{2} \theta }{2g} }} \)

\(\qquad\)______________________________

Then –

\(\qquad\) \(\pink{ \longrightarrow \bf{ \dfrac{h_m}{2} = \dfrac{ {v_0}^{2} \: {sin}^{2} \theta }{2g} }}\)

\(\qquad\) \( \longrightarrow \sf{ \dfrac{ {v}^{2} \: {sin}^{2} \theta }{2g} \times \dfrac{1}{2} = \dfrac{ {v_0}^{2} \: {sin}^{2} \theta }{2g} }\)

\(\qquad\)\(\longrightarrow \sf{ \dfrac{ {v}^{2} \: {sin}^{2} \theta }{4g} = \dfrac{ {v_0}^{2} \: {sin}^{2} \theta }{2g} }\)

\(\qquad\)\(\longrightarrow \sf{ \dfrac{ {v}^{2} \: {sin}^{2} \theta }{2} = {v_0}^{2} \: {sin}^{2} \theta }\)

\(\qquad\)\( \longrightarrow \sf{ \dfrac{ {v}^{2} }{2} = {v_0}^{2} }\)

\(\qquad\)\( \longrightarrow \bf{v_0 = \sqrt{ \dfrac{ {v}^{2} }{2} } = \dfrac{v}{ \sqrt{2} } }\)

\(\qquad\) \(\longrightarrow \bf{v_{(y)}=v_0 \: sin \theta }\)

\(\qquad\) \( \longrightarrow \bf{v_{(y)} = \dfrac{v}{ \sqrt{2} } \: sin \theta = \dfrac{v \: sin \: \theta}{ \sqrt{2} } }\)

Therefore, the vertical component of velocity of projectile at this height will be–

☀️\(\qquad\)\( \pink {\bf{ \dfrac{v \: sin \: \theta}{ \sqrt{2} }} }\)

Answer:

A projectile is thrown with velocity v at an angle θ with horizontal. When the projectile is at a height equal to half of the maximum height, the vertical component of the velocity of projectile is v sintheta / √2

Answer:  

C. Software Engineer

That depends on the values of the resistors.

If the same two resistors are used in both cases, then the total resistance is more in series and less in parallel.

Here's a catchy little factoid for ya:

-- In series, the total resistance is more than the biggest single one.

-- In parallel, the total resistance is less than the smallest single one.

Answer:

a) 50 rad/s

b) 39.8 rev

Explanation:

Given:

r = 0.36 m

v₀ = 0 m/s

a = 1.8 m/s

t = 10 s

a) Find: ω

v = at + v₀

v = (1.8 m/s) (10 s) + (0 m/s)

v = 18 m/s

ω = (18 m/s) / (0.36 m)

ω = 50 rad/s

b) Find: Δθ

Δx = v₀ t + ½ at²

Δx = (0 m/s) (10 s) + ½ (1.8 m/s) (10 s)²

Δx = 90 m

Δθ = (90 m) / (2π × 0.36 m)

Δθ = 39.8 rev

Answer:

b

Explanation:

The energy required to warm one gram of water by one celsius degree is called a specific heat

The specific heat also known as specific heat capacity, is an intensive property specific, and representative of each substance. It is defined as the energy or amount of heat required to raise the temperature of 1 kilogram (kg) of mass by one degree Celsius (°C).  

In the International units system of measurement the specific heat is expressed  in Joules per kilogram per degree Kelvin.

It is the physical magnitude that allows us to know the degree of heat that a body or an environment has. The higher the temperature, the greater the degree of heat.

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Among the variables mentioned, the most important factor that influences drag on an object in the experiments conducted is the object's area.

Drag is the force that opposes the motion of an object through a fluid (such as air or water). It depends on several factors, including the object's area, shape, speed, and the properties of the fluid. However, in the context of the experiments conducted, the area of the object is the most significant factor.

The larger the surface area of an object facing the fluid flow, the greater the drag force it experiences. This is because a larger area creates more resistance to the fluid, resulting in higher drag. Other variables mentioned, such as the length, roughness, specific gravity, material, and density of the object, may indirectly influence drag by affecting the object's shape or ability to streamline, but they are not as directly correlated to drag as the area.

By controlling the area of the object in the experiments, researchers can investigate the impact of drag on the object's motion. Altering the object's area allows for comparative analysis to understand how changes in surface area affect the drag force experienced, providing insights into fluid dynamics and the relationship between objects and their environment.

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The value of x is 25 cm³.

Total mass = m1 + m2

m₁ = 0.8 × x =0.8x g

m₂ = 1 × 100 = 100g

Total = (0.8x + 1000)g

Total volume = (x +100)/(x+100) = 0.96

x  =   4/0.16

   = 25 cm³    

Hence, The value of x is 25 cm³.

Mass is the amount of depend in a physical body. it's also a measure of the body's inertia, the resistance to acceleration while a internet force is applied. An object's mass additionally determines the energy of its gravitational appeal to other bodies.

Mass can be exceptional understood as the quantity of count number present in any object or frame. The entirety we see round us has mass. as an instance, a desk, a chair, your bed, a football, a pitcher, and even air has mass. That being said, all gadgets are mild or heavy because of their mass.

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Answer:

MIRROR

Explanation:

Answer:

reflection of light is the bouncing back of light rats when it falls on a smooth surface or polish surface.

Answer:

Magnetic energy is used by an electromagnet  to pick up metallic objects

Explanation:

An electromagnet generates its own magnetic field in presence of electric current.

As an electric current is induced in an electromagnet , it  magnetic dipole arrange themselves in order to behave as a magnet and hence generate magnetic field with a proper north and south. This leads to attraction of metallic object.

Hence, it can be said that Magnetic energy is used by an electromagnet  to pick up metallic objects

Answer:

Explanation:

The initial vertical velocity is 540sin55° = 442.342103... 442 m/s

The initial horizontal velocity is 540cos55° = 309.731275... 310 m/s

In the real world, both initial velocities would be reduced by air resistance and vertical velocity will be altered by gravity.

The statement "the sun rises in the east, crosses the sky, and sets in the west" is a simplified way of describing the apparent motion of the sun as seen from the Earth.

It is not literally true since the sun does not actually rise or set; it appears to do so due to the Earth's rotation on its axis.

As the Earth rotates from west to east, the sun appears to rise in the east and move across the sky, reaching its highest point at noon. Then, as the Earth continues to rotate, the sun appears to move toward the western horizon, eventually disappearing from view. This apparent motion of the sun is caused by the rotation of the Earth, not the movement of the sun itself.

In reality, the sun is stationary at the center of the solar system, and the Earth and other planets revolve around it. However, the apparent motion of the sun as seen from Earth can be a useful way of describing the movement of the celestial bodies in the sky.

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They can conclude that, The longer an object falls, the more gravity Increases its speed.

What is gravity?

Gravity is the force of attraction between two objects, such as the Earth and the Moon. It is the force that pulls objects towards each other. It is the force that keeps planets in their orbits around the Sun, and the Moon in its orbit around the Earth. The strength of gravity depends on the mass of the two objects, and the distance between them. The greater the mass, the greater the gravitational force. Gravity is the weakest of the four fundamental forces of nature, but it is the most dominant force over large distances. Gravity also plays an important role in the formation of stars and galaxies.

Therefore, They can conclude that, The longer an object falls, the more gravity Increases its speed.

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Answer:

(Question) Which statement about mass is correct?

(Answer)  Mass is the measure of the amount of matter in an object.

(Question) A student designs a gravity experiment. She will time how long it takes different objects to fall from her school’s roof to the ground. She will use three objects: a 2-foot-long board, a toy car, and a paper bag. What is wrong with her experiment’s design?

(Answer)  The objects do not have the same size, shape, or mass, so any differences in drop times cannot be attributed to one variable.

(Question) Which statement about gravity is correct?

(Answer)  Gravity is a force that attracts objects with mass toward each other.

(Question) A team of students performs an experiment to test the effect of gravity on different objects with the same mass. They measure how long it takes the objects to fall from the top of the school’s bleachers. How can they insure they get accurate data?

(Answer) by repeating the experiment several times

(Question) Students analyze their data from a gravity experiment. They find that objects fall at a greater speed from a greater height than from a lower height. What can they conclude?

(Answer)  The longer an object falls, the more gravity increases its speed.

Explanation:

i just finished the quick check UwU

The final velocity of the 8 ball is 12 m/s

When we talk about the momentum what we mean is that the momentum is the product of the mass and the velocity of a body and e know that it is known to be a vector quantity as shown.

From the principle of the conservation of momentum;

Momentum before collision = Momentum after collision

(0.2 * 10) + (0.15 * 0) = (0.2 * 1) + (0.15 * v)

2 = 0.2 + 0.15 v

1.8 = 0.15v

v =1.8/0.15

v = 12 m/s

Hence the velocity is 12 m/s

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