If 1800J of heat are added to a 190-g object, its temperature increases by 10o C.A. What is the heat capacity of this object? C= ? kJ/oCB. What is the object's specific heat? c= ? kJ/(kg x K)

Answer:

D.

Explanation:

DId the test

The gravitational force acting on the body of mass 53 Kg on earth will be 530 Newtons.

Weight is the force exerted by earth on a body on the surface of earth. Mathematically -

W = mg

Given is a 53 kg object standing on the surface of the Earth.

The gravitational force acting on the body will be same as it weight and will be directed towards the center of earth. Using the formula for weight -

W = mg = 53 x 10 = 530 N                [taken g = 10 m/s²]

Therefore, the gravitational force acting on the body of mass 53 Kg on earth will be 530 Newtons.

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If we maintain the percent error in gexp constant, the ratio Δgexp/gexp should rise as l falls and fall as l rises. It implies that the experimental prediction of g is more sensitive to variations in string length for shorter lengths than longer lengths.

To compare the calculated uncertainty in gexp for the shortest and longest values of l to the percent error in gexp, we need to refer to the lab manual for the derivation of uncertainty in g. Let's assume that the lab manual provides the following formula for the uncertainty in g:

Δg = \((2π/T^2)\) * ΔT

where T is the period of oscillation, ΔT is the uncertainty in T, and Δg is the uncertainty in the acceleration due to gravity (g).

Now, let's consider the effect of the length of the string on the experimental prediction. From the formula for the period of oscillation of a simple pendulum, we know that:

T = 2π√(l/g)

where l is the length of the string and g is the acceleration due to gravity.

If we differentiate this equation with respect to l, we get:

dT/dl = π/(gT√(l/g))

Using this equation and the formula for the uncertainty in g, we can derive the uncertainty in T due to the uncertainty in l:

ΔT = \((T^2/(4π^2*l))\) * Δl

Substituting this expression for ΔT into the formula for the uncertainty in g, we get:

Δg = \((2π^2/(T^3*l))\) * Δl

Now, let's consider the shortest and longest values of l. If we assume that the percent error in gexp is the same for both values of l, then we can write:

Δg/gexp = Δl/l

Therefore, we can compare the calculated uncertainty in gexp for the shortest and longest values of l to the percent error in gexp by comparing the ratios Δgexp/gexp and Δl/l for the two values of l.

If we assume that the uncertainty in l is the same for both values, then the ratio Δl/l is the same for both values. Therefore, any difference in the ratio Δgexp/gexp between the two values of l must be due to the effect of l on the experimental prediction.

From the formula for the uncertainty in gexp, we can see that Δgexp is inversely proportional to \(T^3\) and l.

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Historically, photographs taken by American spy planes at high altitudes have been used for various purposes such as reconnaissance and intelligence gathering.

Depending on the specific photograph in question, it could potentially show a wide range of information such as military installations, troop movements, or other sensitive information. The altitudes at which a photo is taken can affect the level of detail that can be seen in the image. However, it is important to note that the use of such technology can also raise privacy and security concerns, particularly if it is used to gather information on individuals or groups without their consent or knowledge.

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As a result, each capacitor has a capacitance of roughly 8.52 pF and 0.498 pF, respectively.

The capacity of an electrical component known as a capacitor to hold energy at a specific voltage is known as its capacitance. The Farad (F) is the measure of capacitance, and a 1F capacitance that has been charged to 1V can retain one Charge of energy.

The relation of the highest charge Q that may be held in a battery to the transmitted voltage V throughout its plates is known as the specifies The value of a capacitor. In other terms, capacitance is the capacity of the gadget to hold the most charge per volt: Q = C, and C = Q

Let's denote the capacitance of the first capacitor as C1 and the capacitance of the second capacitor as C2.

When the capacitors are connected in parallel, the equivalent capacitance is given by:

C_parallel = C1 + C2 = 9.02 pF

The corresponding capacitance of the capacitors when linked in series is calculated as follows:

C_series = 1 / (1/C1 + 1/C2) = 1.58 pF

We can use these equations to solve for C1 and C2.

First, we can rearrange the equation for C_series to solve for C2:

1/C2 = 1/C_series - 1/C1

C2 = 1 / (1/C_series - 1/C1)

Substituting the given values, we get:

C2 = 1 / (1/1.58 pF - 1/C1)

Next, we can substitute this expression for C2 into the equation for C_parallel:

C1 + 1 / (1/1.58 pF - 1/C1) = 9.02 pF

Multiplying both sides by the denominator in the second term and simplifying, we get a quadratic equation:

C1² - 9.02 C1 + 1.58² = 0

Solving for C1 using the quadratic formula, we get:

C1 = (9.02 ± √(9.02² - 41(1.58²))) / (2*1)

C1 ≈ 8.52 pF or C1 ≈ 0.504 pF

Since capacitance cannot be negative, we discard the negative solution. Therefore, the capacitance of the first capacitor is approximately C1 ≈ 8.52 pF.

To find the capacitance of the second capacitor, we can use the expression we derived earlier:

C2 = 1 / (1/1.58 pF - 1/C1)

Substituting the value we found for C1, we get:

C2 = 1 / (1/1.58 pF - 1/8.52 pF)

C2 ≈ 0.498 pF

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Upwelling is the phenomenon that removes the warmer water from the surface.

The correct option is C.

The cause of the upwelling is as follows:-

The wind moves from the ocean to replace the surface warm water with the nutrient-rich colder water.

Hence the correct option is C that is Neap tides move cold water away from the shore.

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Answer: A

Explanation: edge 2022 trust the process

Answer:

the mass of the volume unit of red copper equals 8.8gm.

Answer:

a

Explanation:

Answer:

A or each parent had at least one allele for white pedals

Explanation:

At equilibrium, the forces exerted by the front and back hooves must be equal, but the force exerted by the front hooves will be slightly greater than that of the back hooves.

What is equilibrium?
Chemical equilibrium refers to the situation inside a chemical reaction where both the reactants are present at levels that have no further habit of changing over time, preventing any discernible change in the system's properties. Whenever the forward reaction and the reverse reaction move forward at the same speed, this condition results. The forward as well as backward reactions typically have equal, if not zero, reaction rates. The concentrations of a products and reactants do not change on a net basis as a result. Dynamic equilibrium is the name given to such a situation.

This is due to the fact that the horse's center of gravity is closer to the front hooves, and thus the front hooves must exert a greater force in order to keep the horse balanced.

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Answer:

a) The vertical component of the helicopters speed relative to the air = 0 m/s

The horizontal component of the helicopters speed relative to the air = -42.5 m/s

The vertical component of the wind speed relative to the ground = -21.65 m/s

The horizontal component of the wind  speed relative to the ground = 12.5 m/s

b) The x-component of the helicopter speed relative to the wind speed =  -30 m/s

The y-component of the helicopter speed relative to the wind speed =  -12.5 m/s

c) The resultant speed of the helicopter relative to the ground is 32.5 m/s in the direction of W 22.6° S

Explanation:

The speed of the helicopter = 42.5 m/s

The direction of flight of the helicopter = West

The wind speed = 25.0 m/s

The direction of the wind = E30°S

a) The velocity components of the helicopters speed relative to the air are;

Vertical component = 0 m/s

Horizontal component = -42.5 m/s

The velocity components of the wind speed relative to the ground are;

Vertical component = -25 × cos(30) = -21.65 m/s

Horizontal component = 25 × sin(30) = 12.5 m/s

b) To find the speed of the helicopter relative to the wind we have;

x-component of the helicopter speed = -42.5 m/s

y-component of the helicopter speed = -0

x-component of the wind speed relative to the ground = 25×sin(30) = 12.5 m/s

y-component of the wind speed relative to the ground = -25×cos(30) = -21.65 m/s

Therefore, the x-component of the helicopter speed relative to the wind speed = -42.5 + 12.5= -30 m/s

the y-component of the helicopter speed relative to the wind speed = 0 +  (-12.5) = -12.5 m/s

c) The resultant speed of the helicopter relative to the ground is given by the relation;

\(v_{h, ground} =\sqrt{(v_{h,horizontal})^2 + (v_{h,vertical})^2}\)

= √((-30)² + (-12.5)²) =32.5 m/s

The direction of motion from the x-axis is given as follows;

\(tan(x) = \dfrac{Vertical \ velocity \ component}{Horizontal \ velocity \ component} = \dfrac{-12.5}{-30} = \dfrac{5}{12}\)

\(x = tan^{-1} \left (\dfrac{5}{12} \right ) = 22.62 ^{\circ}\)

Therefore, the helicopter is flying at 32.5 m/s in the direction of W 22.6° S.

Answer:

1800J

Explanation:

E = ½mv²

E = ½(4)(30)²

E = 2 x 900

E = 1800J

Answer:

the velocity of the car is 30 m/s.

Explanation:

Given;

Centripetal force on the car, F = 900 N

mass of the car, m = 10 kg

diameter of the circular path, d = 20 m

radius of the circular path, r = 10 m

The velocity of the car is calculated as follows;

\(F = \frac{mv^2}{r} \\\\mv^2 = Fr\\\\v^2 = \frac{Fr}{m} \\\\v = \sqrt{\frac{900 \times 10}{10} } \\\\v = 30 \ m/s\)

Therefore, the velocity of the car is 30 m/s.

The potential energy lost by the ball is 353.16 J, if the mass of the ball is 1.2 kg and the height from which it drops is 30 m.

Actually energy lost is not scientifically correct to say here, because energy never lost or destroyed, rather it converts from one form to another. Potential energy does not get lost here, but it converts into kinetic energy or heat energy or both.

Potential energy is the energy possessed by an object due to its position relative to the other objects. Potential energy(P) is mathematically described as follows:

P = mgh

Where m is mass, g is acceleration due to gravity, and h is the height of the object. So,

P = 1.2 × 9.81 × 30

P = 353.16 Joules

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Here is a screenshot of the answer:

(The second sentence is incorrect because the triangle should be a right triangle, not an isosceles one. The fifth sentence is incorrect because we use M cos g to calculate the horizontal component.)

Answer:

See explanation

Explanation:

Given

Mass = 15.8g

Volume = 2cm³

Required

Identify the substance

Bass on the given information, the substance can't be determined. However, I'll solve for the density.

Then you identify the substance through its density.

Density = Mass/Volume

Density = 15.8g/2cm³

Density = 7.9g/cm³

This is due to the fact that occluded fronts combine two cold air masses, which causes one of the cold air masses to go downward.

When a warm air mass is sandwiched between two cold air masses, an occluded front occurs. In an occlusion, the warm front passes over the cold front, which dives beneath it.

In a front is obscured, the warm front is fully supplanted by the cold front, in which the warm air masses have completely disappeared. Furthermore, there are frequent shifts in the various weather producing circumstances because of the cold front's relatively low temperature.

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The first step is to convert the parallax angle of the star to distance. We can use the formula: parallax angle in arc seconds = (distance to star in parsecs)^-1 We can rearrange this equation to isolate distance: d = (parallax angle)^-1 Therefore, the distance to the star in parsecs is:

d = (0.0190 arcseconds)^-1 = 52.6 parsecs Next, we need to find the actual distance in meters. One parsec is equivalent to 3.09 × 10^16 meters. Therefore, the distance to the star in meters is: distance = (52.6 parsecs)(3.09 × 10^16 meters/parsec) = 1.63 × 10^18 meters Now, we can use the formula for time: d = vt Solving for time: t = d/v We are told to travel at half the speed of light, which is v = 0.5c, where c is the speed of light.

Therefore, the time to travel to the star is: t = (1.63 × 10^18 meters)/(0.5c) Using the speed of light, c = 3.00 × 10^8 m/s, we get: t = (1.63 × 10^18 meters)/(0.5 × 3.00 × 10^8 m/s)t ≈ 10.9 years Therefore, it would take about 10.9 years to travel to the star if traveling at half the speed of light.

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The minimum force perpendicular to the wall that you must exert on the frame to keep it stationary is 43 N.

A force is described as an influence that causes the motion of an object with mass to change its velocity.

Given data :

Force = 18 newton

mass = ?

Acceleration = ?

We know that force = mass x Acceleration but in this case, we are looking for the minimum force perpendicular to the wall that you must exert on the frame to keep it stationary.

We get that

perpendicular Force =  force / coefficient of kinetic friction

perpendicular Force = 18 / 0.42

perpendicular Force = 43 newton

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Answer:

This description is likely referring to a graph that shows the velocity of a cart over time. The first part of the graph shows a positive slope, indicating that the velocity is increasing over time, and the second part of the graph shows a horizontal line, indicating that the velocity is constant. The fact that the slope of the first part of the graph is positive means that the cart is accelerating, since acceleration is defined as a change in velocity over time. The fact that the slope of the second part of the graph is zero means that the cart is not accelerating, since its velocity is not changing. The explanation suggests that the change in velocity is due to a fan being turned on and then off, which is causing the cart to accelerate and then move at a constant velocity.

Answer:

gravity is changed by a factor of 10/16

Explanation:

gravitational force =  m1 m2 G / r^2    now change the m1  and  r

                               = 10 m1 m2 G/ (4 r)^2

                               = 10 /16  m1 m2 G / r^2

10 /16  the earth's gravity

Answer:

increase distance

Explanation:

Inclined planes make it easier to move objects to a higher elevation. The sloping surface of the inclined plane supports part of the weight of the object as it moves up the slope. As a result, it takes less force to move the object uphill.

Answer:

Hello your answer would be increase of distance

Explanation:

I know that because than you would have to go upward with the object.

The mass and energy of the wood before burning would be equal to the energy and matter of the ash, soot, heat and light after burning.

The law of conservation of energy states that energy can neither be created nor destroyed but can be transformed from one form to another.

While burning of wood, the chemical energy in the wood is released as heat because of the chemical reaction of wood and oxygen.

This type of chemical reaction is called combustion and it requires oxygen. Combustion converts the stored chemical energy in the wood into heat and light energy.

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Answer:

amplitude

Explanation:

sound travel and it amplifies

The transfer of thermal energy that Ilva is experiencing is known as radiation. Radiation is the transfer of heat energy through electromagnetic waves that do not require a medium to travel through. In this scenario, the boiling water and stove are emitting infrared radiation which is absorbed by Ilva's body, causing her to feel the heat. Additionally, convection and conduction are two other methods of transferring thermal energy. Convection is the transfer of heat energy through the movement of fluids, while conduction is the transfer of heat energy through direct contact between two objects. However, in this scenario, radiation is the primary method of thermal energy transfer that Ilva is experiencing.
Ilva is standing a few feet away from boiling water, and she feels the heat from the boiling water and the stove. The term that describes this transfer of thermal energy is "radiation." Radiation is the process through which thermal energy is transferred through electromagnetic waves without the need for direct contact or a medium like air or water. In this scenario, the heat from the boiling water and the stove radiates outwards and reaches Ilva, allowing her to feel the warmth. This form of heat transfer is why you can feel the heat from a fire or a hot object without touching it directly.

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The term that describes the transfer of thermal energy that Ilva feels from the boiling water and the stove is radiation.


Radiation is the transfer of thermal energy through electromagnetic waves. Unlike conduction and convection, radiation does not require a medium (such as a solid, liquid, or gas) to transfer heat. Instead, it can transfer energy through empty space or air.

In Ilva's situation, the heat she feels from the boiling water and the stove is primarily due to the infrared radiation emitted by these hot objects. As the electromagnetic waves reach her, they transfer the thermal energy to her body, making her feel the warmth even though she is standing a few feet away from the heat source.

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Answer:

its lost 91

Explanation:

Answer: The Earth is an oblate spheroid, meaning it is roughly spherical in shape but flattened at the poles and bulges at the equator. This shape has been scientifically proven through centuries of evidence and observations. While some people may claim that the Earth is flat, this idea is not supported by scientific evidence.

Answer:

b : 60m

Explanation:

when a plane mirror is placed horizontally on a level ground at a distance of 60m from the top of tower as shown in figure. a/c to question, The top of tower and its image in the mirror subtend an angle of 90° at the eyes. so, angle made by top of tower and horizontal line is 45° as