how much potential energy would a 15 kg apple have if it is at the top of a tree that is 1 meters high? (round your answer to the nearest whole number, no decimal places).

The energy of one photon of the light is 1.19 x \(10^{-11}\) J.

What is Planck's equation?

According to this, electromagnetic radiation from heated bodies emits in discrete energy units or quanta, the size of which depends on a fundamental physical constant (Planck's constant).

We know that,

E = hν

Where,

E = Energy

h = Planck's constant

ν = Frequency

Note: Planck's constant has value of 6.63 × \(10^{-3}\)\(\frac{J}{s}\)

Putting values in the given formula

E = 6.63 × \(10^{-3}\) \(\frac{J}{s}\) × 1.8 × \(10^{13}\) \(s^{-1}\)

E = 1.19 x \(10^{-11}\) J.

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One significant method for assessing body fat distribution is measurement of waist circumference.

Waist circumference is a widely used method for assessing body fat distribution and is an important indicator of central obesity. It involves measuring the circumference of the waist at a specific anatomical landmark, typically at the level of the narrowest point between the ribs and the iliac crest.

The measurement of waist circumference provides valuable information about the distribution of body fat. Excess fat accumulation in the abdominal region, also known as central obesity or android obesity, is associated with a higher risk of various health conditions, including cardiovascular diseases, type 2 diabetes, and metabolic syndrome.

By measuring waist circumference, healthcare professionals can evaluate an individual's body fat distribution and assess their risk for developing obesity-related health problems.

The measurement of waist circumference is relatively simple and non-invasive, making it a practical method for assessing body fat distribution in clinical and research settings. It is often used in conjunction with other anthropometric measurements, such as body mass index (BMI), to provide a comprehensive evaluation of an individual's body composition and health status.

Regular monitoring of waist circumference can help track changes in body fat distribution over time and guide interventions aimed at reducing central obesity and improving overall health.

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Answer:

A

Explanation:

change in direction ,velocity stays the same

Answer:

reflected by clouds so a is correct

Answer:

This answers idReflected by clouds

a) The total distance is 3250 m

b) The speed is 0.83 m/s

c) The acceleration is 1.06 m/s^2

We have to note that the speed of the student is the ratio of the total distance that the student must have covered to the total time that have been taken so as to complete the journey. We know from the description in the question that;

Total distance = 400 m + 1000 m + 350 m + 1500 m = 3250 m

Total time taken = 65 minutes or 3900 seconds

The speed = 3250 m/3900 seconds

= 0.83 m/s

2)

Using v = u + at

v = 6.5 m/s

u = 1.2 m/s

t =  5 seconds

a = v - u/t

a = 6.5 - 1.2/5

= 1.06 m/s^2

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Answer:

A. To determine the distance the school is from the student's home, we can add up the distance traveled in each direction: 400m (north) + 1000m (east) + 350m (south) + 1500m (east) = 3150m. So the school is 3150 meters away from the student's home.

B. To determine the average rate of speed of the student, we can use the formula: speed = distance / time. In this case, the distance is 3150 meters and the time is 65 minutes (or 1.08 hours in decimal form). So: speed = 3150 / 1.08 = 2916.67 m/h. To convert this to m/s, we can divide by 3.6 = 8.09 m/s.

To determine the acceleration of the dog, we can use the formula: acceleration = (final velocity - initial velocity) / time. In this case, the initial velocity is 1.2 m/s, the final velocity is 6.5 m/s, and the time is 5 seconds. So: acceleration = (6.5 - 1.2) / 5 = 1.04 m/s^2.

Answer:

410–460 g (14–16 oz) and is inflated to 65.7–68.8 kPa (9.5–10.0 psi).

Explanation:

Answer is:

E= V/d = 20.0Volts/ 0.020m = 1000 N/C

The calculated total mechanical energy will reduce if the oscillation is not perpendicular to the photogate.

The mechanical energy at the lowest position of the pendulum is calculated as follows;

\(U = K.E = \frac{1}{2}mv^2\)

let the velocity of the pendulum = vsin(θ)

when the velocity is perpendicular = vsin(90) = v

At any direction different from perpendicular direction, the mechanical energy reduces by;

\(\Delta U = \frac{1}{2} mv^2 - \frac{1}{2} m(vsin\theta)^2\\\\\Delta U = \frac{1}{2} m(v^2 - v^2sin^2\theta)\\\\\Delta U = \frac{1}{2} mv^2(1 - sin^2\theta )\)

Thus, the calculated total mechanical energy will reduce if the oscillation is not perpendicular to the photogate.

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The phenomenon is the term that best describes the phrase "something that happens", therefore the correct answer is option D.

The deliberate, scientifically justified quest and utilization of knowledge and comprehending of the natural and improvements in living standards are what is known as science.

As given in the problem,

Which term best describes the phrase "something that happens"?

A. Experiment

B. Observation

C. Hypothesis

D. Phenomenon

The phenomenon is the term used to define the process of happening things that may be natural or anthropologic.

Thus, The phrase "something that happens" is best described by the word "phenomenon," hence option D is the appropriate response.

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the answer will be 8 meters

(a) In a parallel-flow arrangement, the outlet temperature of the water and the air can be determined using the energy balance equation. The heat transfer rate between the water and the air is equal to the product of the water mass flow rate, specific heat capacity of water, and the change in temperature of the water:

Similarly, the heat transfer rate between the air and the water is equal to the product of the air mass flow rate, specific heat capacity of air, and the change in temperature of the air:

Since the heat exchanger is operating under fully-developed flow conditions, the outlet temperature of the water and the air can be found by equating the heat transfer rates:

By substituting the given values, including the specific heat capacities of water and air, and solving the equations, the outlet temperatures of the air and water can be calculated.

(b) In a counter-flow arrangement, the outlet temperatures of the air and water can be determined using a similar energy balance equation. However, in this case, the change in temperature of the air is taken as the difference between the outlet and inlet temperatures of the air:

Again, by equating the heat transfer rates, substituting the given values, and solving the equations, the outlet temperatures of the air and water in a counter-flow arrangement can be calculated.

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Answer:

Friction. Have a great day! Think positive <3

Answer: Friction

Explanation: It makes sense

A ball of mass 0.3 kg, initially at rest, is kicked directly toward a fence from a point 16m away. The velocity of the ball as it leaves the kicker's foot is 16 m/s at an angle of 48 degrees above the horizontal. The top of the fence is 3 m high. The ball hits nothing while in flight and air resistance is negligible. The acceleration due to gravity is 9.8 meters per second square.

a) The time it takes for the ball to reach the plane of the fence is (t)= 1.49 s

b) The ball pass above the top of the fence will be (h)=3.81m

c) The vertical component of the velocity when the ball reaches the plane of the fence is [v(y)]= -2.71 m/s

The term velocity means that the object's covered distance within the given time. Example: A car goes 3m in 1 second the velocity of the car is 3m/s.

a) To calculate the time we are using the formula,

x=vcosθt

Or, t = x/ vcosθ

Here we are given,

v= the initial velocity of the ball =16 m/s

θ =  the initial angle = 48°

x= The distance of the fence = 16m

W have to calculate the time =t

Now we put the values in the above equation we get,

t = x/ vcosθ

Or, t= 16/16*cos48°

Or, t = 1.49 S

Now we know that, the time it takes for the ball to reach the plane of the fence is (t)=1.49 s

b) Now we have to calculate the height of the ball when it cross the fence. we are using the formula,

y= vsinθt-(1/2)gt²

t =  the time we got earlier = 1.49 s

g= The acceleration due to gravity = 9.8 m/s².

Now we put the values in the above equation we get,

y= vsinθt-(1/2)gt²

Or, y = 16*sin48*1.49-(1/2)*9.8*(1.49)²

Or, y= 6.81 m

The  ball pass above the top of the fence will be (h)=(y-y₁)=(6.81-3)=3.81m

c) To calculate the vertical component of the velocity when the ball reaches the plane of the fence, we are using the formula,

v(y)=vsinθ-gt

Or, v(y)=16*sin48-9.8*1.49

Or, v(y)= -2.71 m/s

From the calculation we assure, The vertical component of the velocity when the ball reaches the plane of the fence is [v(y)]= -2.71 m/s.

[Note: The component is negative cause the velocity is decreasing]

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A ball of mass 0.3 kg, initially at rest, is kicked directly toward a fence from a point 16m away. The velocity of the ball as it leaves the kicker's foot is 16 m/s at an angle of 48 degrees above the horizontal. The top of the fence is 3 m high. The ball hits nothing while in flight and air resistance is negligible. The acceleration due to gravity is 9.8 meters per second squared.

a) Determine the time it takes for the ball to reach the plane of the fence.

b) How far above the top of the fence will the ball pass? Consider the diameter of the ball to be negligible.

c) What is the vertical component of the velocity when the ball reaches the plane of the fence?

Assuming the woman starts at rest, she descends the slide with acceleration a such that

(20.3 m/s)² = 2 a (42.6 m)   →   a ≈ 4.84 m/s²

which points parallel to the slide.

The only forces acting on her, parallel to the slide, are

• the parallel component of her weight, w (//)

• friction, f, opposing her descent and pointing up the slide

Take the downward sliding direction to be positive. By Newton's second law, the net force in the parallel direction acting on the woman is

∑ F (//) = w (//) - f = ma

where m = 77.0 kg is the woman's mass.

Solve for f :

mg sin(42.3°) - f = ma

f = m (g sin(42.3°) - a)

f = (77.0 kg) ((9.80 m/s²) sin(42.3°) - 4.84 m/s²) ≈ 135 N

Compute the work W done by friction: multiply the magnitude of the friction by the length of the slide.

W = (135 N) (42.6 m) ≈ 5770 N•m = 5770 J

Answer:

-5770 J

Explanation:

look above this lol

When borosilicate glass is undergoing change in temperature, heat is transferred.  The specific heat of borosilicate glass is 837.4 J/kg. °C

The specific heat is the amount of heat stored per kilogram of substance by 1 degree rise in temperature.

Given is the mass of borosilicate glass m =100 g =0.1 kg, heat transferred Q = 309J, temperature change ΔT = 3.69°C

Q = m x Cp x  ΔT

309 = 0.1 x Cp x 3.69

Cp = 837.4 J/kg. °C

Thus, the specific heat of borosilicate glass is 837.4 J/kg. °C

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The radius of the ball is 13 cm. There seems to be an error in writing the hole and the depth of the ball, it should be 24 cm and 8 cm.

The Pythagoras theorem explains the relationship between the lengths of the sides of a right triangle.

To determine the radius of the ball, we can use the Pythagorean Theorem, namely:

c² = a² + b²

Let the solid ball have a radius of R cm.

From the diagram:

AC = 24 cm

So, AE = ½ AC = 12 cm

And, BE = 8 cm

From the triangle OEC, we get: OE² + EC² = OC²

⇒ (R - 8)² + 12² = R²

16 R = 208

R = 13 cm

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The correct answer is "Your latitude." The number of degrees of arc that Polaris (the North Star) is above the horizon depends on your latitude.

Polaris is located very close to the North Celestial Pole, which is the point in the sky directly above Earth's North Pole. If you are at the North Pole (latitude 90 degrees North), Polaris would appear directly overhead at an angle of 90 degrees above the horizon. As you move south from the North Pole, the angle decreases. At the equator (latitude 0 degrees), Polaris would appear on the horizon, or at an angle of 0 degrees above the horizon.

Therefore, the correct answer is "Your latitude." The other options you mentioned, such as mass, the core, and spiral, are not directly related to the angle at which Polaris appears above the horizon.

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Answer:5 hours

Explanation:

300 divided by 20 = 15

300 divided by 15 = 20

the difference is 5

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

94 mn the wavelength in micrometers of light with a frequency of 3. 2 × 10^12 hz.

What is wavelength?

The wavelength of a periodic wave is the distance over which the wave's shape repeats in physics. It is the distance between two successive corresponding locations of the same phase on the wave, such as two neighbouring crests, troughs, or zero crossings, and it is a feature of both travelling and standing waves, as well as other spatial wave patterns. The spatial frequency is the inverse of the wavelength. The Greek letter lambda (λ) is widely used to represent wavelength.

Because all electromagnetic waves travel at the speed of light, c = v (lambda) where v is frequency and lambda is wavelength and c is the speed of light.

v=c/λ

By putting the values -

3.2 × 10^12 = 3.00*10^8 / λ

λ= 3.0010^8 / 3.2 × 10^12

= 9.375m 1 / 10^

= 94 mn

Therefore the answer to this question is 94 mn.

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Answer:

b.  1 m

Explanation:

the distance from one crest to the next  is 1λ

So, the distance from one crest to the next  1 m

λ = 1 m

Refraction results from differences in light's speed. The correct answer is C) speed.

Refraction is the term for the bending of light as it passes through transparent materials (it also occurs with sound, water, and other waves). We are able to create lenses, magnifying glasses, prisms, and rainbows because to this bending caused by refraction.

Refraction occurs when light passes through different mediums and changes its speed. This change in speed causes the light to bend, creating the effect of refraction.

This is why objects appear to be in different positions when viewed through water or a lens. The frequency and incident angles of the light do not affect refraction, only the speed of the light does.

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Answer:

Gravity overcomes the hex nut's stationary inertia and moves the nut straight down into the bottle.

Explanation:

Hope this helps.

Have a good night ma´am/sir.

Be safe!

Answer:

Please send a picture for context and I will be able to answer the question.

Explanation:

Without the picture I do not understand.

Answer:

His average speed is 1.5 meters per second.

Explanation:

Given:

Distance = 90 meters

Time = 1 minute = 60 seconds

equation...

Average Speed = Total Distance / Total Time

so...

Average Speed = 90 meters / 60 seconds

then the answer would be...

Average Speed = 1.5 meters per second

-- burn it   (it combines with Oxygen and makes new substances)

-- chew it   (it combines with your saliva and makes new substances)

-- swallow it   (your stomach juices dissolve it and make new substances)

I think that's as far as I should go with it.

Given:

• Mass of ice = 295 g ==> 0.295 kg

• Initial temperature, T1 = -5°C

• Final temperature, T2 = 20°C

Let's find the amount of heat necessary to change the ice to water.

To find the amount of heat, let's apply the Specific Heat Capacity formula:

Where:

m is the mass in kg = 0.295 kg

T1 is the initial temperature

T2 is the final temperature.

c is the specific heat capacity

Let's first find the amount of heat required to change ice from -5°C to 0°C.

Now, let's find the heat required to change from 0°C(ice) to 0°C(water).

We have:

Where L is the latent fusion of water:

Now, let's find the heat required to change 0°C (water) to 20°C(water).

We have:

Therefore, the total heat required is:

Q = Q1 + Q2 + Q3

Thus, we have:

Therefore, the amount of heat neccesary is

Answer:

33.3m

Explanation:

Recall that for a regular wave, the relationship between, wavelength, frequency  and velocity (speed) is given by :

v = fλ,

where:

v = velocity (speed) of the wave = 50m/s

f = frequency of the wave = 1.5 Hz

λ = wavelength (we are asked to find this)

simply substitute the given values into the equation:

v = fλ

50 = 1.5 λ,

λ = 50/1.5

λ = 33.3m

Answer:

black

Explanation:

because in a more lighter color like sliver. it actually makes it cold, whilst you have black it actually keep it hot and this is the same with anything. clothes mostly cause of darker clothing make us warm and all while white is all cool.