1.) True or False. Scientists have drilled through the crust to reach the mantle.

Answer:

Mandible.

Explanation:

The mandible in the bone that allows you to open and close your mouth, otherwise known ad the jawbone.

Answer:

mandible

Explanation:

which is also the lower jaw and it allows the mouth to open and close

hope i helped

Answer:

Through the water cycle, heat is exchanged and temperatures fluctuate. As water evaporates, for example, it absorbs energy and cools the local environment. As water condenses, it releases energy and warms the local environment. The water cycle also influences the physical geography of the Earth.

The height will be 11.4m

The height at which the stream of water strikes the building can be found by solving for h in the equation:

h = viy * t - (1/2)gt^2

Where:

viy (vertical component of velocity) = vi * sin(i) = 40.0 m/s * sin(31.0°)

t = d / vix = 39.0 m / (40.0 m/s * cos(31.0°))

g = 9.8 m/s^2

By substituting the values, we can find that the height of the stream strikes the building is approximately:

h = (40.0 m/s * sin(31.0°)) * (39.0 m / (40.0 m/s * cos(31.0°))) - (1/2)(9.8 m/s^2)((39.0 m / (40.0 m/s * cos(31.0°)))^2

Therefore, h = 11.4 m

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To determine the height at which the stream of water will strike the building, we can calculate the horizontal distance and vertical component of the stream's velocity. By using the formulas for horizontal distance, vertical component, time, and height, we can solve for the height at which the stream will strike the building. In this case, the height is approximately 19.9 meters.

To determine the height at which the stream of water will strike the building, we need to consider the vertical and horizontal components of the stream's velocity. We can calculate the horizontal distance the water travels using the formula d = vit. In this case, d = 39.0 m (the distance from the fireman to the building), vi = 40.0 m/s (the speed of the stream), and t is the time it takes for the water to reach the building. Since the water is fired at an angle of 31.0° above the horizontal, the vertical component of its velocity can be found using the formula vfy = visin(i). Once we have the vertical component of the stream's velocity, we can calculate the time it takes for the water to reach the building using the formula t = d/vix. Finally, we can use the time and the vertical component of the stream's velocity to find the height at which the stream will strike the building using the formula y = vfy × t - 0.5gt², where g is the acceleration due to gravity (approximately 9.8 m/s²).

Plugging in the values, we get:

d = 39.0 m

vi = 40.0 m/s

i = 31.0°

vfy = vi × sin(i)

t = d/vix

y = vfy × t - 0.5gt²

After calculating all the values, the height at which the stream of water will strike the building is approximately 19.9 meters.

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(a) The direction of wave propagation is along the negative z-axis.

(b) The wavelength (λ) is π m, the frequency (f) is approximately 1.59 × \(10^{7}\) Hz, and the wave impedance (Er) is approximately 0.1667 sin (\(10^{8}\) + 2z) ohms.

(c) The magnetic field (H) is (50 sin (\(10^{8}\) + 2z)) / (3 × \(10^{8}\)) ay A/m.

If the direction of wave propagation is specified as along the negative z-axis, we can conclude that the wave is traveling in the opposite direction to the positive z-axis. In the given expression: E = 50 sin(10^8 + 2z) ay V/m

Since the wave is traveling along the negative z-axis, it means that as z increases (in the positive direction), the wave is propagating in the opposite direction.

Hence, the direction of wave propagation for the given wave is along the negative z-axis.

To find the wavelength (λ), frequency (f), and wave impedance (Er), we can relate the electric field (E) and magnetic field (H) components using the wave equation in a nonmagnetic medium:

E = c * H,

where c is the speed of light in the medium, which can be approximated as 3 × \(10^{8}\) m/s in free space.

(a) Direction of wave propagation: Along the positive z-axis.

(b) Calculating λ, f, and Er:

Since the electric field (E) is given as E = 50 sin (\(10^{8}\) + 2z) ay V/m, we can see that the angular frequency (ω) is \(10^{8}\) rad/s and the wave number (k) is 2.

The relationship between wave parameters is given by: c = λ * f, where c is the speed of light.

Using the relation c = ω/k, we can solve for λ and f:

λ = 2π/k = 2π/2 = π m (meters)

f = ω/2π = \(10^{8}\)/2π ≈ 1.59 × \(10^{7}\) Hz (Hertz)

To find the wave impedance (Er), we can use the equation Er = E/H:

Er = E/c = (50 sin (\(10^{8}\) + 2z)) / (3 × \(10^{8}\)) ≈ 0.1667 sin (\(10^{8}\) + 2z) ohms.

(c) The magnetic field (H) can be calculated using the relationship H = E/c:

H = (E/c) = (50 sin (\(10^{8}\) + 2z)) / (3 × \(10^{8}\)) ay A/m.

The direction of wave propagation is along the negative z-axis. (b) The wavelength (λ) is π m, the frequency (f) is approximately 1.59 × \(10^{7}\) Hz, and the wave impedance (Er) is approximately 0.1667 sin (\(10^{8}\) + 2z) ohms. The magnetic field (H) is (50 sin (\(10^{8}\) + 2z)) / (3 × \(10^{8}\)) ay A/m.

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The owner's velocity is in the opposite direction of the combined velocity of the dog and the cat, and its magnitude is approximately 0.916 m/s.

To solve the given problem, we can use the principle of conservation of momentum to find the direction and magnitude of the owner's velocity.

Let's denote the velocity of the dog as v1 (northward), the velocity of the cat as v2 (eastward), and the velocity of the owner as v (unknown).

According to the conservation of momentum, the total momentum before the interaction is equal to the total momentum after the interaction.

The total momentum before the interaction is given by:

Total momentum before = (mass of the dog * velocity of the dog) + (mass of the cat * velocity of the cat) + (mass of the owner * velocity of the owner)

Mass of the dog (m1) = 24.4 kg

Velocity of the dog (v1) = 2.14 m/s

Mass of the cat (m2) = 5.53 kg

Velocity of the cat (v2) = 3.56 m/s

Mass of the owner (m3) = 78.5 kg

Velocity of the owner (v) = unknown

Total momentum before = (24.4 kg * 2.14 m/s) + (5.53 kg * 3.56 m/s) + (78.5 kg * v)

The total momentum after the interaction is zero since the owner has the same momentum as the pets taken together.

Total momentum after = 0

Equating the two expressions:

(24.4 kg * 2.14 m/s) + (5.53 kg * 3.56 m/s) + (78.5 kg * v) = 0

Simplifying the equation:

(52.216 kg·m/s) + (19.6488 kg·m/s) + (78.5 kg * v) = 0

71.8648 kg·m/s + (78.5 kg * v) = 0

Solving for v:

78.5 kg * v = -71.8648 kg·m/s

v = -71.8648 kg·m/s / 78.5 kg

v ≈ -0.916 m/s

Therefore, the direction of the owner's velocity is opposite to the combined velocity of the dog and the cat, and the magnitude of the owner's velocity is approximately 0.916 m/s.

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Heat absorbed = 1.05 x 105 J.

Heat absorbed = (mass x specific heat x change in temperature) + (mass x latent heat of vaporization)

Heat absorbed = (0.2 kg x 4180 J/kg°C x (140.0°C - 60.0°C)) + (0.2 kg x 2.26 x 106 J/kg)

Heat absorbed = 59.7 x 104 J + 45.2 x 104 J

Heat absorbed = 1.05 x 105 J

What is vaporization?

Vaporization is the process of a liquid or solid changing into a vapor or gas. It occurs when enough energy is supplied to the molecule to overcome the attractive forces, allowing them to break away from the liquid or solid and form a gas. Vaporization can occur due to heating, pressure, or chemical reactions and can be used in many applications such as distillation and sterilization.

Therefore, Heat absorbed = 1.05 x 105 J.

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The distance traveled by the object during the time of acceleration is 211.75 m.

Distance can be defined as the total lenght between two points.

T o calculate the distance traveled by the object during the time of acceleration, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the distance traveled by the object is 211.75 m.

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Increasing his acceleration will impact his velocity and rate of displacement covered in that as the speed increases due to the increased rate of acceleration, the rate of air resistance also increases.  

Air resistance is a force created by air. When an item moves through the air, the force operates in the opposite direction.

When a diver descends, the force of air resistance acts to counteract the force of gravity. As the skydiver falls faster and faster, the quantity of air resistance grows until it equals the magnitude of gravity's force.

A balance of forces is achieved when the force of gravity equals the force of air resistance, and the skydiver no longer accelerates. The skydiver reaches what is known as terminal velocity.

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Answer:

Thermal energy is directly related to heat because thermal energy is how heat is transfered.

Answer:

an acronym because it is shorted to remember like mvemjsun it's the planet

The speed of the bullet is 2.595 m/s m/s.

Generally, The speed of the bullet can be determined using the formula:

v = (2 * π * r * n * θ) / 360

where:

First, we need to convert the rotational speed from rev/min to rev/s:

n = 545 rev/min * (1 min / 60 s)

= 9.08 rev/s

Next, we need to convert the radius of the disk from cm to m:

r = 65 cm * (1 m / 100 cm)

= 0.65 m

Finally, we can plug in the values and solve for the speed:

v = (2 * π * 0.65 * 9.08 * 25.2) / 360

v= 2.595 m/s

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The distance traveled by the person to come to a complete stop in 38 ms at a constant acceleration of 60 g is approximately 273.42 meters.

The distance that a person covers to come to a complete stop in 38 ms at a constant acceleration of 60 g can be calculated using the kinematic equation.

The formula is given by, d = (v^2 - u^2) / 2a, where d is the distance traveled, v is the final velocity, u is the initial velocity, and a is the acceleration given in g units.

To solve the problem, we need to first convert the acceleration given in g units to meters per second squared (m/s²). We know that 1 g is equivalent to 9.8 m/s².

Hence, 60 g is equivalent to 60 × 9.8 m/s² = 588 m/s².

Substituting the values in the above formula, we get,d = (0 - u^2) / 2a= u^2 / 2a, since the final velocity is 0 when the person comes to a complete stop= u^2 / 2 × 588= u^2 / 1176 m

The time taken, t = 38 ms = 0.038 s.

Now, we know that acceleration, a = (v - u) / t.

We can rearrange the above equation to find the final velocity, v. We get,v = u + at

Substituting the values, we get,588 = u + (588 × 0.038)u = 588 - (588 × 0.038)u = 567.816 m/s

Using the value of u, we can now find the distance traveled using the kinematic equation as, d = u^2 / 1176= (567.816)^2 / 1176≈ 273.42 m.

Therefore, the distance traveled by the person to come to a complete stop in 38 ms at a constant acceleration of 60 g is approximately 273.42 meters.

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The potential energy is at the maximum when you reach the top of your jump on a trampoline. The correct answer is option B.

Potential Energy is the type of energy an object possesses by virtue of its position relative to others, stresses within itself, electric charge, and other factors. Potential energy exists in various forms, including gravitational potential energy, elastic potential energy, chemical potential energy, and electrical potential energy.

This type of energy can be converted into another type of energies. Examples, a charged battery has potential energy and it can be used as electrical potential energy. Petrol, diesel and and gas have chemical potential energy and be used as kinetic energy.

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Answer:

Explanation:

Where is the remaining part of the question? This is a very easy one

Answer:

Mass was added to the water particles, resulting in deposition.

Explanation:

Answer:  The energy was removed from the water particles resulting in condensation

Explanation Think about when you leave a cup of ice of and after a while you see water droplets thats what happened to the grass in the morning and thats called condensation.

The maximum height to which the ball attain before falling back down is 1147.96 m

The following data were obtained from the question:

The maximum height reached by the ball can be obtained as illustrated below:

v² = u² – 2gh (since the ball is going against gravity)

0² = 150² – (2 × 9.8 × h)

0 = 22500 – 19.6h

Collect like terms

0 – 22500 = –19.6h

–22500 = –19.6h

Divide both side by –19.6

h = –22500 / –19.6

h = 1147.96 m

Thus, the maximum height reached by the ball is 1147.96 m

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Explanation:

1. Given:

v₀ = 0 m/s

a = 2.0 m/s²

t = 1.2 s

Find: v

v = at + v₀

v = (2.0 m/s²) (1.2 s) + 0 m/s

v = 2.4 m/s

2. Given:

v₀ = 0 m/s

v = 9.0 m/s

a = 2.2 m/s²

Find: t

v = at + v₀

9.0 m/s = (2.2 m/s²) t + 0 m/s

t ≈ 4.1 s

using public transport

Answer:

temperature

Explanation:

when you put a water on the stove the water will start to boil there for temperature

Answer:

I don't understand the question SRRY!!

Can you plz answer my most recent question??

The difference about the center of a quasar, when contrasted with a spiral galaxy are

For Quasars:

The Spiral galaxies

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It is essential to remember that the materials utilised, the kind of block, and the charge circumstances all affect how well these approaches work. To prevent breaking the blocks or hurting oneself, it's crucial to handle the blocks cautiously.

Rub the L block with a substance that has a strong propensity to give up electrons, such wool or silk, as one way to do this. The L block acquires electrons from the substance when it is rubbed against it, leaving the block with a net positive charge. Similar to this, you may rub the R block with anything that has a strong propensity to draw electrons, such hair or rubber. The R block will then receive electrons from the substance, leaving the block with a net negative charge as a result.

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Given:

The current drawn by the hair dryer is: I = 9 A

The voltage applied to the hair dryer is: V = 120 v

The time for which the charge passes is: t = 15 min = 15 × 60 s = 900 s

To find:

a) The resistance

b) Charge passing through the resistor in 15 mins

Explanation:

a)

The expression for potential difference (V) in terms of current (I) and resistance (R) is given as:

Rearranging the above equation, we get:

Substituting the values in the above equation, we get:

b)

The electric current (I) through the conductor is defined as the amount of charge (Q) passing through the conductor per unit time (t). It is given as:

Rearranging the above equation and substituting the values in it, we get:

Final answer:

a) The resistance is 13.33 Ω

b) The charge passing for 15 mins is 8100 C.

Answer:

Explanation:

First, we need to convert the velocity to meters per second:

60 mph = 88.5 ft/s = 26.82 m/s

Now we can use the formula:

v = at

where v is the final velocity, a is the acceleration, and t is the time.

Rearranging this formula, we get:

t = v/a

Substituting the values, we get:

t = 26.82 m/s / 13.5 m/s^2 = 1.987 seconds (rounded to three decimal places)

Therefore, it will take approximately 1.987 seconds to reach 60 mph with an average acceleration of 13.5 m/her/sec.

The vehicle will hit 60 mph in 7152 seconds (or about 1 hour and 59 minutes) with an average acceleration of 13.5 m/hr/sec.

The definition of acceleration is. The pace at which velocity changes with regard to time. Because it has both amount and direction, acceleration is a vector variable. It is also the second derivative of location in relation to time, or the first derivative of motion in relation to time.

We can begin by converting the final velocity to meters per second (m/s) as the initial acceleration is given in m/hr/sec.

60 mph = 26.8224 m/s (1 mile = 1.60934 km, 1 hour = 3600 seconds)

Now, we can use the formula:

v = u + at

Where,

v = final velocity = 26.8224 m/s

u = initial velocity = 0 m/s (car starts at rest)

a = acceleration = 13.5 m/hr/sec = 0.00375 m/s^2 (convert from m/hr/sec to m/s^2)

t = time taken to reach the final velocity

Substituting the values, we get:

26.8224 = 0 + (0.00375)t

t = 26.8224 / 0.00375

t ≈ 7152 seconds

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Answer:

  C.  14300 kg*m/s

Explanation:

The momentum of Jenny's car is the product of its mass and velocity:

  mv = (1300 kg)(11 m/s) = 14300 kg·m/s

After the collision, the velocity and momentum are 0. So, the change in momentum is (a decrease of) ...

  14300 kg·m/s

Answer:

Explanation:

Comment

This is a good question to know how to do. You don't use the 0.24 m/s because that is a horizontal speed. Nothing opposes it. So the question becomes, what is happening vertically. You treat this question as though you just dropped the ball.

Givens

v0 = 0                    The ball has no vertical speed to start with

a = 9.8 m/s^2    

t = 0.30 seconds

Formula

d = vo*t + 1/2*a*t^2              Substitute the givens into the formula

Solution

d = 0*t + 1/2 * 9.8 * 0.3^2    

d =       0.88 meters rounded to two palaces.

Answer:

The greater the amount of output for a given unit of input, the higher the overall productivity. Businesses generally aim to improve productivity over time to maintain competitiveness and increase the business's profitability. Individuals are familiar with the idea of productivity in their own lives.

Answer:

A hypothesis is what you think will happen.

A conclusion is the results of an experiment summarized.

Hope this helps.