when a 45.0 g sample of an alloy at i 00.0 oc is dropped into i 00.0 g of water at 25.0 °c, the final temperature is 37.0 oc. what is the specific heat of the alloy?

Answer: Chemical energy is the energy stored in bonds that is released when chemical reactions occur.

.

We want to convert the speed of the bus from kilometers per hour to meters per second.

To do this, multiply the speed in km/hr by 1,000 and divide by 3,600.

The formula to do this is: 1 km/hr = 1,000/3,600 m/s

Therefore, we have that 45 km/hr is:

45 x 1000/ 3,600 ➡️ 12.5 m/s = 1.25 x 10 to the 1st power m/s

The answer is option A.

Answer:

15 is it

Explanation:

Answer:

The answer would be 0.23

Explanation:

Put in 0.23

Answer:

uui 2+6=8m calculator hunny work's

According to x-ray observations, the space between galaxies in a galaxy cluster is very hot. It is because the matter between galaxies (often called the intergalactic medium) is mostly hot, ionized hydrogen with bits of heavier elements such as carbon, oxygen and silicon thrown in.

Massive structures are collapsing than at earlier times. Large collapsing structures lead to higher velocity intergalactic shocks and, as a result, significant intergalactic shock heating, with some gas heated well above the \(10^{4}\) K temperatures.

Heating also occurs as galaxies expel out most of the gas that fell into them. The final product is a warm/hot phase, with temperatures of > \(10^{5}\) K.

Now, Let's know how do you use X-rays to make space observations?

X-radiation is absorbed by the Earth's atmosphere, so instruments to detect X-rays must be taken to high altitude by balloons, sounding rockets, and satellites.

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Answer:4.2 miles/hour

Explanation:

220 each side = 880 meters total

880/3.5 = 251 is how many meters per minute

multiply by 60 to get per hour

A ball is shot off a cliff from 100m above the ground at angle 20 degrees, and lands on the ground 12 seconds later.

The given values are as follows:

Initial height (y) = 100 mAngle (θ) = 20 degreesTime taken (t) = 12 s

Now, we need to find the following values:Initial velocity (u)Initial x-component velocity (ux)Horizontal position (x)Let’s solve these one by one:

a) Initial velocity (u)The initial velocity of the projectile can be found using the following formula:

v = u + at

Here, a is the acceleration due to gravity, which is equal to -9.8 m/s² (since it is acting downwards).

Also, the final velocity (v) is equal to zero (since the projectile lands on the ground and stops).

Substituting these values, we get:0 = u + (-9.8 × 12)u = 117.6 m/s

Therefore, the initial speed of the projectile is 117.6 m/s.

b) Initial x-component velocity (ux)The initial x-component velocity can be found using the following formula:ux = u × cosθSubstituting the values, we get:

ux = 117.6 × cos20°ux = 111.6 m/sc) Horizontal position (x)The horizontal position of the projectile after landing can be found using the following formula:

x = ut + ½at²

Here, a is the acceleration due to gravity, which is equal to -9.8 m/s² (since it is acting downwards).

Substituting the values, we get:

x = (117.6 × cos20°) × 12 + ½ × (-9.8) × 144x = 1345.1 m

Therefore, the horizontal position of the projectile after landing is 1345.1 m.

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The airline will need to have at least 167 passengers on each flight to break even.

To calculate the number of passengers needed to break even, we need to consider the total costs and the revenue generated per flight.

The total cost per flight consists of the fixed costs (£25,000) and the variable costs (£75 per passenger). The revenue per flight is determined by the ticket price (£225) multiplied by the number of passengers.

Let's denote the number of passengers as 'P'. The total cost per flight is given by:

Total Cost = Fixed Costs + (Variable Cost per Passenger * Number of Passengers)

Total Cost = £25,000 + (£75 * P)

The revenue per flight is given by:

Revenue = Ticket Price * Number of Passengers

Revenue = £225 * P

To break even, the total cost should equal the revenue:

£25,000 + (£75 * P) = £225 * P

Now, we can solve this equation for P to find the number of passengers needed to break even:

£25,000 + (£75 * P) = £225 * P

£25,000 = £225 * P - £75 * P

£25,000 = £150 * P

P = £25,000 / £150

P ≈ 166.67

Since the number of passengers must be a whole number, we round up to the nearest whole number:

P = 167

The airline will need at least 167 passengers on each flight to break even. However, since the maximum capacity of the aircraft is 200 passengers, the airline will need to fill the aircraft to its maximum capacity to break even on each flight.

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Answer:

Final velocity is the velocity which the body has at the end of the given time period.

Hi there!

We can use the work-energy theorem to solve.

Recall that:

\(\large\boxed{W = \Delta KE = \frac{1}{2}mv_f^2 - \frac{1}{2}mv_i^2}\)

The initial kinetic energy is 0 J because the crate begins from rest, so we can plug in the given values for mass and final velocity:

\(W = \frac{1}{2}(50)(5.61^2) = 786.8025 J\)

Now, we can define work:

\(\large\boxed{W = Fdcos\theta}}\)

Now, plug in the values:

\(786.8025 = Fdcos\theta\\\\786.8025 = (375)(3.07)cos\theta\)

Solve for theta:

\(cos\theta = .6834\\\theta = cos^{-1}(.6834) = \boxed{46.887^o}\)

Answer:

wave velocity is 0.6 so answer would be A.

Explanation:

Used omni wavelength calculator

Answer:

10 N

Explanation:

From the diagram,

Applying the principle of moment,

Sum of clockwise moment = sum of anti clockwise moment.

Assuming: the 10 N is placed on the 5 cm mark, F is placed on the 40 cm mark, The 25 N is placed on the 10 cm mark, the 30 N is placed on the 75 cm mark, and the 40 N is placed on the 80 cm mark.

Therefore,

10(50-5)+F(50-40)+40(80-50) = 30(75-50)+25(50-10)

450+10F+1200 = 750+1000

10F+1650 = 1750

10F = 1750-1650

10F = 100

F = 100/10

F = 10 N

Answer:

The potential energy is zero since the rock isn't moving.

In the circuit described in Fig. 30.11 of the textbook, when switch S1 is closed, a current will begin to flow in the circuit and an induced emf will be generated due to the self-inductance of the coil. The potential differences Vab and Vbc can be determined using Kirchhoff's voltage law (KVL).

(a) Just after S1 is closed, the current in the circuit is initially zero. Therefore, the potential difference across the resistor R is also zero. The potential difference across the inductor L is given by:

V_L = -L(di/dt)

Since the current i is initially zero, the potential difference across the inductor is also zero. Therefore, the potential difference between points a and b (Vab) is equal to the applied voltage E:

Vab = E = 60.0 V

(b) Just after S1 is closed, the potential difference across the inductor L is equal to the applied voltage E, and the potential difference across the resistor R is zero. Therefore, the potential difference between points b and c (Vbc) is given by:

Vbc = -E = -60.0 V

(c) A long time (many time constants) after S1 is closed, the current in the circuit will reach a steady state and the induced emf due to the self-inductance of the coil will be zero. At steady state, the potential difference across the resistor R is given by:

V_R = iR

where i is the steady-state current in the circuit. The potential difference across the inductor L is zero since there is no induced emf. Therefore, the potential difference between points a and b (Vab) is given by:

Vab = V_R = iR

Using Ohm's law, we can express the steady-state current in terms of the resistance R and the applied voltage E:

i = E/R

Substituting the given values, we get:

i = 60.0 V / 240 Ω = 0.25 A

Therefore, the potential difference between points a and b at steady state is:

Vab = iR = (0.25 A)(240 Ω) = 60.0 V

(d) A long time (many time constants) after S1 is closed, the potential difference across the inductor L is zero, since there is no induced emf. Therefore, the potential difference between points b and c (Vbc) is given by:

Vbc = iR

where i is the steady-state current in the circuit. Using the value of i calculated above, we get:

Vbc = iR = (0.25 A)(240 Ω) = 60.0 V

Therefore, the potential difference between points b and c at steady state is also 60.0 V.

(e) At an intermediate time when the current in the circuit is 0.150 A, the potential difference across the resistor R is given by:

V_R = iR = (0.150 A)(240 Ω) = 36.0 V

The potential difference across the inductor L is given by:

V_L = -L(di/dt)

To determine di/dt, we can use the equation for the current in an RL circuit:

i = (E/R)(1 - e^(-Rt/L))

Differentiating both sides with respect to time, we get:

di/dt = (E/R)(e^(-Rt/L))

Substituting the given values, we get:

di/dt = (60.0 V / 240 Ω)(e^(-240t/0.160))

At the intermediate time when i = 0.150

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When you are pushing a book across a desk with a constant velocity, there are two forces acting on the book: friction and the force of your push.

The force of friction acts in the opposite direction to the motion of the book and opposes the motion of the book. The force of friction is caused by the interaction between the bottom surface of the book and the surface of the desk.

The force of your push acts in the same direction as the motion of the book and causes the book to move.

The y-forces on the book are not equal in magnitude, as there is only one force acting in the y-direction, which is the force of friction. The x-forces are also not equal in magnitude, as there is one force acting in the x-direction, which is the force of your push.

According to Newton's Second Law, the force acting on an object is equal to the mass of the object multiplied by its acceleration. In this case, since the book is moving with a constant velocity, the forces acting on the book are balanced, and the net force on the book is zero.

According to Newton's Third Law of Motion, for every action, there is an equal and opposite reaction. So, when you push on the book, the equal and opposite force is the force exerted by the book on your hand.

Answer:

The book is being pushed from the side meaning there are horizontal forces at work. The first is an applied force, the second is a force of friction against the motion. Since the book is moving at a constant velocity, the book is not accelerating. This means that the forces must be balanced.

Have a Nice Day :  ) .

Answer:

gravity effects only the mass of an object

Explanation:

an acorn is heavier that a stick and it's round shape gives it less wind resistance so gravity pulls it down faster. A stick vertical has little wind resistance but when rotated to when it is horizontal it has more resistance so it slows down but the the force of gravity is still as strong. A leaf has very little mass and it's shape provideds lots of wind resistance so it falls slower. The moon is not only effected by the earth's gravity it is also effected by the suns. It has its own gravity as well. with all these factors it stays in place and moves with the earth.

The wavelength of the earthquake waves is 12,000 meters.

To calculate

the wavelength of the earthquake waves, we can use the formula:

Wavelength = Velocity / Frequency

First, let's convert the distance of 123,600 meters to kilometers by dividing it by 1000, which gives us 123.6 km. Next, we need to calculate the velocity of the earthquake waves. The velocity of seismic waves depends on the medium through which they travel. In general, for most types of seismic waves, the velocity ranges between 2 and 8 km/s.

Assuming a conservative value of 5 km/s for the velocity, we can substitute the values into the formula:

Wavelength = (123.6 km) / (0.25 Hz)

Dividing 123.6 by 0.25 gives us a wavelength of 494.4 km.

Therefore, the wavelength of the earthquake waves is approximately 494.4 kilometers.

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They must follow specific regulations concerning their products and the industry they operate in, they should also follow health and safety regulations to ensure that their products are safe for consumers to use.

Pestel analysis of Capei Soaps:

Political: The manufacturing company, Capei Soaps, must follow specific policies to make sure that they can conduct business in an ethical and efficient manner.

They must adhere to labor laws, environmental laws, and anti-corruption laws.

Economic: Capei Soaps operates in an industry that is heavily dependent on the economy.

As a result, any economic changes, including a recession, can impact their production and sales.

Capei Soaps should try to find ways to operate more cost-effectively, so that they can maintain their competitive advantage.

Social: Capei Soaps has to be mindful of the current social trends and consumer preferences.

They should produce environmentally-friendly soaps, as this is what consumers are looking for.

Technological: As technology is improving, it is critical for Capei Soaps to maintain technological advancements.

This is because they have to stay ahead of their competition and use the latest technology to produce more efficient soaps.

Environmental: Capei Soaps must be environmentally conscious and try to find ways to make their soaps more eco-friendly.

This could include utilizing renewable energy, using biodegradable packaging, and reducing their carbon footprint.

Legal: Capei Soaps has to make sure they are following all legal requirements.

They must follow specific regulations concerning their products and the industry they operate in.

They should also follow health and safety regulations to ensure that their products are safe for consumers to use.

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The value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.

When an object collides with another object, they exchange energy. For example, a baseball and bat collision or a car collision. When two objects collide, the force of the collision has to be equal on both sides of the collision according to Newton's Third Law. So, to find the value of force, we will apply the equation:

F = ΔP / ΔT

where F is the force, ΔP is the change in momentum, and ΔT is the time of collision. The equation represents the impulse momentum theorem.

Now, let's apply the given values to the above equation.

Final momentum (p2) = mass × final velocity (v2)

p2 = 0.15 kg × (-50 m/s)

p2 = -7.5 kg.m/s

Initial momentum (p1) = mass × initial velocity (v1)

p1 = 0.15 kg × (40 m/s)

p1 = 6 kg.m/s

Change in momentum (ΔP) = p2 - p1

ΔP = -7.5 kg.m/s - 6 kg.m/s

ΔP = -13.5 kg.m/s

Time of collision (ΔT) = 8.0 × 10³ s

Now, putting the values of ΔP and ΔT in the equation of impulse momentum theorem, we get:

F = ΔP / ΔT

F = -13.5 kg.m/s ÷ 8.0 × 10³ s

F = -1.7 × 10⁻³ N

Thus, the value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.

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Answer:

There are several ways to consider the composition of the human body, including the elements, type of molecule, or type of cells. Most of the human body is made up of water and H2O, with bone cells being comprised of 31% water and the lungs 83%.1  Therefore, it isn't surprising that most of the human body's mass is oxygen. Carbon, the basic unit for organic molecules, comes in second. 96.2% of the mass of the human body is made up of just four elements: oxygen, carbon, hydrogen, and nitrogen.

Explanation:

Elements are essential units that are the basic constituents of all living and non-living beings. They are the core of the universe. Every tiny or huge particle comprises elements. Our body is built up of five major elements: Carbon, Hydrogen, Oxygen, Nitrogen and calcium.

Answer:

A is the right answer

Explanation:

mark me as a

Answer: B) Hydrogen should be moved to the right on the Periodic Table.

Answer:

Friction or tension

Explanation:

Friction stops an object from moving in the presence of force

Answer:

A

Explanation:

This is to do with convection currents :)

Hope this helps!

6.25 gram of element x would be left after 4 years.

Leftover amount of the element x = 100/2^4

= 100/16 = 6.25 gram

Thus, we can conclude that 6.25 gram of element x would be left after 4 years.

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Answer:

\(\triangle I=8.60*10^{-4}m\)

Explanation:

From the question we are told that:

Diameter \(d=1.27cm\)

Length \(l=5.75m\)

Diameter of aluminum column \(d_a=16.14cm\)

Length of aluminum column \(l_a=3.25m\)

Load Force \(F=8500N\)

Generally the equation for Young modulus is mathematically given by

\(\gamma=\frac{FL}{A \triangle L}\)

Given the The load force

\(F=\frac{Y_aA_a\triangle I}{L_a}+\frac{YA \triangle I}{L}\)

\(\triangle I=\frac{F}{\frac{Y_aA_a}{L_a}}+\frac{YA}{L}\)

\(\triangle I=\frac{8500N}{ \frac{7*10^{10} \pi (0.1624^2-0.1614^2)}{4*3.15}+ \frac{20*10^10 \pi (0.0127^2)}{4(5.75)}}\)

\(\triangle I=8.60*10^{-4}m\)

For the right block to balance the forces and remain steady, it needs to weigh 7.9 kg.

The force is an external agent which is applied to the body or an object to move it or displace it from one position to another position.

When there is no net force acting on the system, the two blocks stay in place. In this instance, the strain in the rope holding the two blocks together balances the pull of gravity on them. The sine of the angles, along with the masses of the blocks, can be used to calculate the tension in the rope.

\(T= (m_1 \times g) \times sin(\theta_1) + (m_2\times g) \times sin(\theta_2)\)

Substituting the known values:

\(T = (10 \times 9.8 )\times sin(23^o) + (m_2\times 9.8 )\times sin(40^o)\)

Solving for m₂:

\(m_2= \dfrac{(T- (10 \times 9.8 )\times sin(23^o)} { (9.8\times sin(40^o))}\)

The mass of the right block must be 7.9 kg for the two blocks to remain stationary.

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The question is -

Two blocks in the Figure below are at rest on frictionless surfaces What must be the mass of the right block so that the two blocks remain stationary? 4.9kg 6.1kg 7.9kg 9.8kg

Answer:

6544.07 J

Explanation:

From the question given above, the following data were obtained:

Distance (d) = 15 m

Force (F) = 628 N

Angle (θ) = 46°

Workdone (Wd) =?

The work done can be obtained by using the following formula:

Wd = Fd × Cos θ

Wd = 628 × 15 × Cos 46

Wd = 9420 × 0.6947

Wd = 6544.07 J

Therefore, the workdone is 6544.07 J

Answer:

The height of the apple from the ground is at 49552.61071 m or is approximately at 5.0 × 10 m

Explanation:

The rotor on a helicopter turns at an angular speed of 3.20 × 102 revolutions per minute.

(a) The angular speed in radians per second is 33.6 radians/second.
(b) If the rotor has a radius of 2.00 m, the arc length at which the blade traces out in 3.00 x 10² seconds is 2.016 x 10⁴ meters

(c) If the pilot opens the throttle, and the angular speed of the blade increases while rotating twenty-six times in 3.60 s, the average angular speed is 45.3 radians/second

(a) To express the angular speed in radians per second, first convert the given speed from revolutions per minute to radians per second.
1 revolution = 2π radians
1 minute = 60 seconds

 Angular speed = 3.20 × 102 rev/min × (2π radians/1 rev) × (1 min/60 sec)

                           = 33.6 radians/second

(b) To find the arc length traced by the tip of the blade in 3.00 x 10² seconds, first calculate the total angle in radians that the rotor turns in that time.

             Total angle = angular speed × time

                                 = 33.6 radians/sec × 3.00 x 10² sec

                                 = 1.008 x 10⁴radians

             Arc length (s) = radius (r) × angle (θ)

                                    = 2.00 m × 1.008 x 10⁴radians

                                    = 2.016 x 10⁴ meters

(c) To calculate the average angular speed during the 3.60 seconds when the rotor rotates twenty-six times, first convert the number of rotations to radians.

           Total angle = 26 rev × (2π radians/1 rev)

                               = 52π radians

           Average angular speed = total angle/time

                                                    = (52π radians)/(3.60 sec)

                                                    ≈ 45.3 radians/second

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