a properly exposed photograph is taken at f/16 and 1100s. what lens opening is required if the shutter speed is 1400s?

Due to geographical location of new zealand and sydney, they celebrate the new year hours before it is celebrated in india.

New Zealand and Sydney celebrate the new year hours before it is celebrated in india because of its geographical position close to the International Date Line. New Zealand is considered one of the first countries in the world that welcome the New Year.

So we can conclude that due to geographical location of new zealand and sydney, they celebrate the new year hours before it is celebrated in india.

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h= max

v= 0

t= 1.25

Vf= 0 at max height

vf = vi + at

0 = vi - 9.8 * 1.25

vi = 12.25 m/s

Answer:

\(50\:\mathrm{m\: North}\\50\sqrt{3}\:\mathrm{m\: East}\)

Explanation:

We can create a 30-60-90 triangle. The distance she walked is then the hypotenuse of the triangle, and using 30-60-90 triangle rules, we have the following:

The North leg is opposite to the \(30^{\circ}\) angle. Therefore, if we call this distance \(y_N\), we have the following:

\(\sin 30^{\circ}=\frac{y_N}{100},\\\frac{1}{2}=\frac{y_N}{100},\\y_N=\fbox{$50\:\mathrm{m}$}\).

The East leg is opposite to the \(60^{\circ}\\\) angle. If we call this distance \(x_E\), we have:

\(\sin 60^{\circ}=\frac{x_E}{100},\\\frac{\sqrt{3}}{2}=\frac{x_E}{100},\\x_E=\fbox{$50\sqrt{3}\:\mathrm{m}$}\).

Answer:

k = 44000 N/m

Explanation:

Given the following data;

Maximum gravitational potential energy = 770 J

Elastic potential energy = 14% of 770 J = 14/100 * 770 = 107.8 J

Extension, x = 42 - 35 = 7cm to meters = 7/100 = 0.07 m

To find the spring constant, k;

The elastic potential energy of an object is given by the formula;

\( E.P.E = \frac {1}{2}kx^{2}\)

Substituting into the equation, we have;

\( 107.8 = \frac {1}{2}*k*0.07^{2}\)

\( 107.8 = \frac {1}{2}*k*0.0049 \)

Cross-multiplying, we have;

\( 215.6 = k*0.0049 \)

\( k = \frac {215.6}{0.0049} \)

k = 44000 N/m

The spring constant of the tendon is 44000 N/m.

The following can be depicted from the question:

Elastic potential energy will be:

= 14% × 770J = 107.80 Joule.

The spring constant will be calculated thus:

107.8 = 1/2 × k × 0.07²

107.8 = 0.5 × k × 0.0049

k = 215.6 / 0.0049

k = 44000 N/m.

Therefore, the spring constant of the tendon is 44000 N/m.

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Answer:

not realy

Explanation:

dancing is a way of exercise and liking a song or you're just happy etc.

The specific heat capacity of the water (4.184 J/g°C), and ΔT is the change in temperature (1.05°C). is 13.2 J.

Specific heat is the amount of heat required to raise the temperature of one gram of a material by one degree Celsius. It is usually measured in units of joules per gram per degree Celsius (J/g°C). The concept of specific heat is important in many areas of science, including thermodynamics and chemistry. It is used to calculate the amount of energy required to change the temperature of a given mass of a substance, and it is also used to calculate the thermal conductivity of a material.

The heat involved in the dissolution of KCl can be calculated using the following equation:
q = m x c x ΔT
where q is the heat, m is the mass of the KCl (3.00 g), c is the specific heat capacity of the water (4.184 J/g°C), and ΔT is the change in temperature (1.05°C).
Therefore, q = (3.00 g) x (4.184 J/g°C) x (1.05°C)
= 13.2 J.
The assumption made here is that the coffee cup calorimeter is perfectly insulated, so that all the heat gained or lost by the KCl is equal to the heat gained or lost by the water.

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Answer:

30 J

Explanation:

You have to transform g in kg, so 600 g=0,6 kg

the kinetic energy value is

K= ½ mv² so it is K=½ (0.6×100)=30 J

\(\text{Kinetic energy,}\\\\~~~~~~E_k = \dfrac 12 mv^2\\\\~~~~~~~~~~=\dfrac 12 \times 6\times 10^{-1} \times 10^2~~~~~~~;[m = 600 g = 600 \times 10^{-3}~ \text{kg} = 6\times 10^{-1}~ \text{kg}]\\\\~~~~~~~~~~=\dfrac{60}2\\\\~~~~~~~~~~= 30~ J\)

A chemical structure of a molecule includes the arrangement of atoms and the chemical bonds that hold the atoms together. The 2-HEPTANONE molecule contains a total of 21 bond(s) There are 7 non-H bond(s), 1 multiple bond(s), 4 rotatable bond(s), 1 double bond(s) and 1 ketone(s) (aliphatic).

:/ hope this helps

Answer: 2.925

Explanation: :)

Answer:

2.925

Explanation:

Answer:

Explanation:

Work = Force times displacement. Therefore,

W = 3150(75.5) so

W = 238000 N*m

Answer:

48gk

Explanation:

Answer:

4 ohms

Explanation:

Use Ohm's Law: V = IR

V = 3.0 V

I = 0.75 A

Plug thise values into the equation:

3.0 V = (0.75 A) R

---> R = 4 ohms

The resistance of the bulb when a current of 0.75 is passed when connected to 3.0 V battery is 4 ohms.

Resistance is the opposition to the flow of current through it.

Given is the current passing through the bulb is 0.75 Amperes and the voltage of the battery is 3.0 V, then according to the ohm's law,

V = IR

where R is the resistance of the bulb

3.0 V= 0.75 A× R

R = 4 Ω

The resistance of the bulb is 4 Ω.

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Answer:

Explanation:

The work done by an object can be found by using the formula

From the question

force = 1,000 N

distance = 20 m

We have

workdone = 1000 × 20

We have the final answer as

Hope this helps you

The net force's work is described as d=(3.82)(4.00)=15.3J for W=F net, where we made use of the fact that the canister began at rest and traveled horizontally while being affected by horizontal forces; the resulting effect is represented by the symbol F net.

Since all of these cases are in closed systems, the result is in a new preserved quantity.

Linear momentum and this new quantity, angular momentum, are comparable. In this chapter, we first define angular momentum and then examine it from a number of angles.

But first, we look into a single particle's angular momentum. This enables us to compute the force angular momentum of a rigid cylindrically symmetric body and a system of particles.

We used the fact that the canister started at rest and moved horizontally under the influence of horizontal forces; the ensuing effect is denoted by the symbol F (force) net.

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A pebble off a cliff to hit the ground below t = 0.128 sec.

Given,

distance = 18m

velocity = 2.3m /s

time = ?

To find the time in given data,

Use formula,

velocity = distance / time

Putting the value in formula,

We get,

2.3 m/s = 18 m / t

t = 2.3 m/s / 18 m

t = 0.128 sec

The vector quantity velocity (v), denoted by the equation v = s/t, measures displacement (or change in position, s), over change in time (t). Speed (or rate, r) is a scalar quantity, denoted by the equation r = d/t, that measures the distance traveled (d) over the change in time (t).

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Initial velocity, u= 4.18E^5 m/s

Final velocity, v= 5.19E^5 m/s

a = 3E^14 m/s²

from,

a = (v - u)

t

t = (v - u)

a

t = (5.19E^5 - 4.18E^5)

3E^14

t = 3.37 × 10^-10s

side note; the E represents 10 power.

28.284 m/s fast it was  going when it was 10m high from the ground.

Calculation :

Given:

The maximum height reached by the ball s=30 m

The object will come into rest at the maximum height.

The gravity always acts downward so the acceleration of the ball ⇒a=g=−10 m/s²

From the third equation of motion:

v²=u²+2as

Thus the initial velocity of the ball is:

u=\(\sqrt{v^{2}-2as}\)

=\(\sqrt{0-2(-10m/s^{2} )(30 m)}\)

u=24.495 m/s

From the first equation of motion:

v=u+at

The time is taken by the ball to reach the maximum height is:

t=(v−u)/a

=[0−(24.495 m/s)]/(−10 m/s²)

t=2.4495 s

Now From the third equation of motion:

v²=u²+2as

Thus the velocity of the ball at 10 m is:

v=\(\sqrt{u^{2} +2as}\)

=\(\sqrt{(24.495 m/s)^{2} -2(-10 m/s^{2} )(10 m)}\)

v≈28.284 m/s

Velocity is a vector representation of the displacement experienced by an object or particle over time. The standard unit for velocity magnitude (also called velocity) is meters per second (m/s).

Velocity is the percentage of time an object moves along a path, and Velocity is the speed and direction of an object's movement. That is, velocity is a scalar value and velocity is a vector.

Velocity (v) is a vector quantity that measures displacement (or change in position Δs) with respect to change in time (Δt) and is given by the equation v = Δs/Δt.

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It will take approximately 18.57 seconds for the boat to cross the river.

To solve this problem, we can use vector addition to determine the velocity of the boat relative to the river bank. Let's break it down into two components: the velocity of the boat in the north direction (upstream) and the velocity of the river current in the west direction. a) Velocity of the boat relative to the river bank:

The velocity of the boat in the north direction is given as 15 m/s. The velocity of the river current in the west direction is 6 m/s. To find the velocity of the boat relative to the river bank, we need to find the resultant vector of these two velocities.

Using vector addition, we can calculate the resultant velocity (V_resultant) as follows:

V_resultant = √((V_boat)^2 + (V_river)^2)

where V_boat is the velocity of the boat in the north direction (15 m/s) and V_river is the velocity of the river current in the west direction (6 m/s).

Plugging in the values:

V_resultant = √((15 m/s)^2 + (6 m/s)^2)

V_resultant = √(225 m^2/s^2 + 36 m^2/s^2)

V_resultant = √(261 m^2/s^2)

V_resultant ≈ 16.14 m/s

Therefore, the velocity of the boat relative to the river bank is approximately 16.14 m/s.

b) Time taken to cross the river:

To find the time taken to cross the river, we can use the equation:

Time = Distance / Velocity

The distance across the river is given as 300 m, and the velocity of the boat relative to the river bank is approximately 16.14 m/s.

Plugging in the values:

Time = 300 m / 16.14 m/s

Time ≈ 18.57 s

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Answer:

Reliable predictions require precursors – some kind of signal in the earth that indicates a big quake is on the way. The signal has to happen only before large earthquakes and it has to occur before all big quakes. At the moment seismologists have failed to find those precursors – if they even exist.

Answer:

because liquid and solid states of water possesses intermolecular force of attraction which held the molecules of water in fixed

Answer:

182 V

Explanation:

We do:V=I.R

V is energy so

I = 7

R = 7+7+3+3+6

V= 7.26

V=182

Yes, it will be safe to have the turbine component operate at 1150°C

Based on the given information, the melting temperatures of iron and titanium are 1538°C and 1668°C, respectively. In an iron-titanium alloy, these two elements are combined, resulting in an intermediate melting temperature. This alloy would have a higher melting temperature than pure iron and lower than pure titanium.

Operating the turbine engine at 1150°C would be safe, as this temperature is significantly below the melting temperatures of both elements. It provides a sufficient margin of safety for the alloy, ensuring that it remains solid and stable during operation. Additionally, alloys typically have improved mechanical properties, such as increased strength and resistance to wear, compared to their constituent elements. This makes iron-titanium alloys suitable for high-temperature applications like turbine engines.

In summary, using an iron-titanium alloy for a turbine engine operating at 1150°C should be safe and appropriate due to its enhanced mechanical properties and melting temperature range.

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Answer:

.516

Explanation:

I typed this into Acellus and it was correct.

Orbital resonance,called when two or more bodies orbit at multiples of the same orbital period.

In celestial mechanics, an orbital resonance is when two orbiting bodies exert a regular, periodic gravitational impact on one another. This frequently occurs as a result of the two bodies' orbital periods being related by a ratio of two tiny integers.The gravitational influence of the bodies is significantly strengthened by orbital resonances. The majority of the time, this causes an unstable interaction in which the bodies trade momentum and modify their orbits until the resonance vanishes. A resonant system may occasionally be robust and self-correcting, allowing the bodies to stay in resonance. Examples include the 2:3 resonance between Pluto and Neptune and the 1:2:4 resonance of the Jupiter's moons Ganymede, Europa, and Io. Gaps in Saturn's rings are caused by unstable resonances with its inner moons.

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Answer:

answer is 4

Explanation:

The charge that is moved is required.

The magnitude of charge moved is option 4. \(2\times 10^{-3}\ \text{C}\)

V = Potential difference = 10.0 V

W = Work done = \(2\times10^{-2}\ \text{J}\)

q = Magnitude of charge

When work done on moving a charge is divided by the potential difference we get the magnitude of the charge that is moved.

The charge of an object is the result of an excess or a lack of positive or negative charges on a body.

So, the magnitude of charge is given by

\(q=\dfrac{W}{V}\\\Rightarrow q=\dfrac{2\times 10^{-2}}{10}\\\Rightarrow q=2\times 10^{-3}\ \text{C}\)

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Comet nuclei are the ice planetesimals that are still present in the solar system.

option D

The solid, ice entities in the center of comets are known as comet nuclei, cometary nuclei, or comet cores. Water ice, carbon dioxide, methane, ammonia, and other volatile substances are all combined to form these tiny celestial bodies, which are normally a few kilometers large. The material that gave rise to the planets, asteroids, and Kuiper Belt objects is thought to have been the source of the cometary nuclei, which are considered to represent the remains of the early Solar System.

The frozen surface of a comet begins to evaporate as its nucleus gets closer to the Sun, releasing gas and dust into space and creating a luminous coma and  long, flowing tail. Insights into the make-up and development of the early Solar System, a well s the mechanisms that influence comet evolution through time, can be gained from research on cometary nuclei.

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The number of calories that you can eat a day without gaining weight depends on your activity level

For there to be a balance between the number of calories consumed through food and weight gain, it is important to maintain a good level of physical activity that helps us to maintain a healthy weight and at the same time does not allow an increase in weight and body mass.

All this is because the relationship between daily calories consumed and weight gain is directly proportional to the level of physical activity that we do.

It is the amount of mass associated with a person's body

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The characteristics of a one-solar-mass star to its protostar phase or main-sequence phase.1. Protostar phase, gas and dust are contracting under gravity.2. Main-sequence phase, hydrogen fusion occurs in the core.

Here are the characteristics matched to the appropriate phase:

1. Protostar phase:
- Gas and dust are contracting under gravity.
- The star's core is not hot enough to sustain nuclear fusion.
- The star is mainly powered by gravitational contraction.
- The object is surrounded by an accretion disk.
- Often found in molecular clouds or star-forming regions.

2. Main-sequence phase:
- Hydrogen fusion occurs in the core.
- The star is in hydrostatic equilibrium, balancing gravity and radiation pressure.
- The star has a stable luminosity and temperature.
- This phase lasts for billions of years, depending on the star's mass.
- The star is found on the main-sequence line on the Hertzsprung-Russell (H-R) diagram.

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The product (2 amperes × 2 volts × 2 seconds) is equal to 8 joules.

The formula for electrical power is P = VI, where P is power in watts, V is voltage in volts, and I is current in amperes. The product of amperes, volts, and seconds can be rearranged as follows:

(2 amperes × 2 volts × 2 seconds) = (2 amperes) × (2 volts) × (2 seconds)

= (4 volts) × (2 seconds) × (2 amperes)

= (4 volts) × (4 coulombs/second)

= 16 joules

However, the question asks for the product in units of coulombs, newtons, joules, calories, or newton-amperes. Since the answer is in joules, the correct option is (C) 8 joules.

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