Landslides can
O trigger eruptions
O burn forests in their path
O block streams, which can then later trigger a lahar
O trigger a tsunami

Answer:

Work = force • distance

so (input) 400 • 6 = 2400 joules.

and (output) 500 • 4 = 2000 joules

and efficiency = output energy ÷ input energy

so 2000 ÷ 2400 = 83%

input energy = 2400 joules

output energy = 2000 joules

efficiency = 83%

The average deceleration felt by the driver was approximately 26.67 m/s². to calculate the average deceleration, we can use the equation of motion:

v² = u² + 2as

where:

v = final velocity (0 m/s, since the car came to a stop)

u = initial velocity (60 m/s)

a = average deceleration

s = displacement (1.3 m, the distance the front end of the car was crushed)

Rearranging the equation, we have:

a = (v² - u²) / (2s)

Substituting the values:

a = (0 - 60²) / (2 * 1.3)

a ≈ -26.67 m/s² (negative sign indicates deceleration)

Therefore, the average deceleration felt by the driver was approximately 26.67 m/s². This means that for every second the car was in contact with the truck, its speed reduced by an average of 26.67 meters per second.

Learn more about distance here:

https://brainly.com/question/13034462

#SPJ11

Answer:

0.36 m

Explanation:

The moment of inertial of a wheel can be calculated as

Where r is the radius of the wheel and m is its mass.

Solving the equation for r, we get

So, replacing I by 0.13 kg m2 and m by 0.98 kg, we get

Therefore, the radius of the wheel is 0.36 m

Answer:

C

Explanation:

Answer:

C. Light does not need a medium to travel through, but since sound waves must have a medium to vibrate, sound is not created where no air is present.

Explanation:

The reason the bell is seen to vibrate but not heard is that unlike light, which does not require a medium to pass through, sound waves require an air-filled space in order to vibrate. Option C is correct.

A sound wave is produced when a medium begins to vibrate. When an entity vibrates, a pressure wave is formed, which causes sound.

Light does not need a medium to travel through, but since sound waves must have a medium to vibrate, the sound is not created where no air is present best describes why the bell is seen vibrating but not heard.

The complete question is attached.

Hence option C is correct.

To learn more about the sound wave, refer to

https://brainly.com/question/11797560

#SPJ2

Answer:

The force of buoyancy is the upward force exerted on an object immersed in a fluid (liquid or gas) due to the difference in pressure between the bottom and the top of the object. This force is equal to the weight of the fluid displaced by the object, and it acts in the opposite direction to the force of gravity.

Therefore, the correct answer is D) It pushes upward.

Explanation:

Answer:

free-body diagram

Explanation:

A free-body diagram represents the location, magnitude and direction of all forces acting on a single object isolated from its environment.

Answer:

20 ohms

Explanation:

Resistance=Potential difference÷Electric current

X=260÷13

X=20

Answer:

law of conservation of energy is that a perpetual motion machine of the first kind cannot exist, that is to say, no system without an external energy supply can deliver an unlimited amount of energy to its surroundings

Explanation:

Hope it helps.

Mark me as Brainliest plz!

The tension in the rope, when the gymnast climbs at a constant speed, is 710.5 Newtons

If the gymnast is climbing the rope at a constant speed, we can assume that the upward force exerted by the rope (tension) is equal to the downward force of gravity acting on the gymnast.

This is because the net force on the gymnast is zero when they are climbing at a constant speed.

The downward force of gravity can be calculated using the formula:

           Force of gravity = mass * acceleration due to gravity

The weight of the gymnast can be calculated using the formula:

Weight = mass * gravitational acceleration

Weight = 72.5 kg * 9.8 m/s²

Weight = 710.5 N

Since the gymnast is climbing at a constant speed, the tension in the rope is equal to the weight of the gymnast:

Tension = Weight

Tension = 710.5 N

Therefore, the tension in the rope, when the gymnast climbs at a constant speed, is 710.5 Newtons.

To learn more about  force click here; brainly.com/question/13014979

#SPJ11

man of height 1.6 meters walks away from a 5- meter lamppost at a speed of 1.1 m/s.  The rate at which the man's shadow is increasing in length is 1.1 meters per second.

Let's consider the situation as a similar triangles problem. We have a vertical triangle formed by the man, the lamppost, and their shadows. The height of the man corresponds to the height of his shadow, and the distance between the man and the lamppost corresponds to the length of his shadow.

Since the triangles are similar, the ratios of corresponding sides are equal. Let's define the length of the man's shadow as s and the rate at which his shadow is increasing in length as ds/dt.

According to the similar triangles, we can set up the following proportion:

(s + h) / h = (x + 5) / x

Here, h represents the height of the man, x represents the distance between the man and the lamppost, and s + h represents the total length of the shadow (including the man's height).

We differentiate both sides of the equation with respect to time (t):

ds/dt + dh/dt = (1 + 5/x) * dx/dt

Since the man's height (h) is constant, dh/dt is zero. The distance between the man and the lamppost (x) is also constant, as the man is walking away at a steady speed. Therefore, dx/dt is equal to the man's speed, which is given as 1.1 m/s.

Plugging in the values:

ds/dt + 0 = (1 + 5/x) * 1.1

Simplifying the equation:

ds/dt = (1 + 5/x) * 1.1

Now, we need to find the value of x. Since the man's height is 1.6 meters and he is walking away from a 5-meter lamppost, the initial value of x is 5.6 meters.

Plugging in the value of x:

ds/dt = (1 + 5/5.6) * 1.1

ds/dt = (1 + 0.892857) * 1.1

ds/dt = 1.892857 * 1.1

ds/dt ≈ 2.08 meters per second

The rate at which the man's shadow is increasing in length is approximately 2.08 meters per second.

To know more about meters per second, visit :

https://brainly.com/question/17894274

#SPJ11

The correct option is (c) Number of neutrons = number of protons

The right response is neutron. Neutron.

Learn more about Neutron brainly.com/question/1421805

#SPJ2

Answer:

color it heat it and thats it oh yeah and paint

The net force acting on the mass along the incline is equal to 16 Newton.

Given the following data:

To determine the net force acting on the mass along the incline:

First of all, we would find the acceleration of the mass by using the second equation of motion:

\(S = ut+ \frac{1}{2} at^2\\\\4 = 0(1) + \frac{1}{2} a(1)^2\\\\4=\frac{a}{2}\\\\a=2\times 4\)

Acceleration, a = 8 \(m/s^2\)

For the net force, we would apply Newton's Second Law of Motion:

\(F_{net} = mass \times acceleration\\\\F_{net} =2 \times 8\)

Net force = 16 Newton.

Read more here: https://brainly.com/question/20037336

Answer:

20 N/m

Explanation:

From the question,

The ball-point pen obays hook's law.

From hook's law,

F = ke............................ Equation 1

Where F = Force, k = spring constant, e = compression.

Make k the subject of the equation

k = F/e........................ Equation 2

Given: F = 0.1 N, e = 0.005 m.

Substitute these values into equation 2

k = 0.1/0.005

k = 20 N/m.

Hence the spring constant of the tiny spring is 20 N/m

Answer:

vaporation

Explanation:

latent heat also called the heat of vaporization is the amount of energy necessary to change a liquid to a vapour at constant temperature and pressure.

David Popenoe's research suggests that the weakest families on earth may be found in Western, industrialized nations.

Industrialized countries such as America, France, the United Kingdom, and other Western nations have weaker family values and structures than developing nations, according to David Popenoe's research. The family's crucial role in society's economic, social, and emotional stability has long been recognized by social scientists.

Popenoe's research supports the notion that Western, industrialized societies may be experiencing a family crisis.Popenoe says that family disintegration and weakening is a serious social problem in the Western world. Popenoe's studies found that Western societies, which place a high value on independence, individualism, and personal satisfaction, are at odds with the family's objectives of commitment, obligation, and selflessness.

Learn more about Popenoe's Visit: brainly.com/question/13056367

#SPJ11

Answer: 19 r

Explanation: I have know idea

Answer:

This is because it is derived from newtons and metres as shown in the expression;

Explanation:

\(pressure = \frac{force}{area} \\ P= \frac{F}{A} \\ P= \frac{newtons}{ {m}^{2} } \\ = pascals\)

Answer:

Unit of pascal is called derived unit because it involves three fundamental units i.e.meter,kg,and second.

Explanation:

formula of pascal=kg/m/s^2

Answer:

The effort required to perform work

Explanation:

An electric device delivers a current of 5.0 A for 10 seconds then the number of electrons flowing through this device would be 3.125ₓ10²⁰

Charged material experiences a force when it is exposed to an electromagnetic field due to the physical property of electric charge. You can have a positive or negative electric charge (commonly carried by protons and electrons respectively). Unlike charges attract one another while like charges repel one another. We refer to an object as neutral if it has no net charge.

Electric current is defined as the charge per unit of time.

The mathematical relation between current and the electric charge

I =Q/T

where I is the current flowing

Q is the total electric charge

T is the time period for which the current is flowing

By using the above relation between electric current and electric charge

I =Q/T

By substituting the values of current and time

5 =Q/10

Q= 50 Coulomb

The charge on one electron is -1.6 ×10⁻¹⁹ coulomb.

The number of electrons = Total charge /charge on the one electron

                                         =50/1.6×10⁻¹⁹

                                          =3.125ₓ10²⁰

Thus, the total number of electrons flowing through the device would be 3.125ₓ10²⁰.

Learn more about an electric charge from here

brainly.com/question/8163163

#SPJ4

Answer:

468.42572 Wavelength In Metres

Explanation:

Answer:

\(\huge\boxed{\sf Wavelength= 470\ m}\)

Explanation:

Given Data:

Speed of light = c = 3 × 10⁸ m/s (Constant)

Frequency = f = 640 kHz = 6.4 × 10² × 10³ Hz = 6.4 × 10⁵ Hz

Required:

Wavelength = λ = ?

Formula:

λ = c / f

Solution:

λ = 3 × 10⁸ / 6.4 × 10⁵

λ = 0.47 × 10³

λ = 4.7 × 10² m

λ = 470 m

\(\rule[225]{225}{2}\)

Hope this helped!

Answer:

please find attached pdf

Explanation:

Answer: Carbohydrates , proteins and lipids are large molecules that are needed by the body for growth, repair and metabolism . They are found in our food. These molecules are too large to pass from the intestine into the blood, so digestive enzymes break them down into smaller molecules.

Explanation:

Answer:

Digestion is the mechanical and chemical break down of food into small organic fragments. It is important to break down macromolecules into smaller fragments that are of suitable size for absorption across the digestive epithelium. Large, complex molecules of proteins, polysaccharides, and lipids must be reduced to simpler particles such as simple sugar before they can be absorbed by the digestive epithelial cells. Different organs play specific roles in the digestive process. The animal diet needs carbohydrates, protein, and fat, as well as vitamins and inorganic components for nutritional balance. How each of these components is digested is discussed in the following sections

The independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.The dependent variable, the one that you measure the response in, is the distance that the washers travel.

The independent variable in an experiment is the variable that is manipulated by the researcher. It is the variable that is intentionally changed by the researcher to examine the impact of this change on the dependent variable.The dependent variable, on the other hand, is the response that is measured by the researcher.

It is the variable that is being influenced by the independent variable in an experiment. Thus, in the given experiment, the car's hitting the barrier is the independent variable while the distance that the washers travel is the dependent variable.

Know more about independent variable    here:

https://brainly.com/question/32850660.

#SPJ8

The property of a transverse wave that stays the same even as the wave's energy and other properties change is the wavelength.

The correct option to the given question is option a.

The wavelength is the distance between two successive points of the wave that are in phase. As the wave's energy and amplitude change, the distance between two successive points of the wave that are in phase remains the same.

This is because wavelength is determined by the frequency of the wave and the speed of propagation. The frequency of the wave is the number of cycles of the wave that occur in one second, while the speed of propagation is the rate at which the wave travels through a medium.

If the frequency of the wave and the speed of propagation remain the same, then the wavelength will also remain the same even as the wave's energy and other properties change. This property is known as the characteristic of the wave.The amplitude is the maximum displacement of a point on the wave from its rest position. The frequency is the number of cycles of the wave that occur in one second. The rest position is the position of the medium when it is not disturbed.

Hence, wavelength of a transverse wave remains same even as the wave's energy and other properties change.

For more such questions on transverse wave visit:

https://brainly.com/question/31402164

#SPJ8

Answer:

see below

Explanation:

b ) the vibrations of the air particles are parallel to the direction of energy transfer.

c) use formula

speed = wavelength x frequency

speed = 0.85 x 400

speed = 340 m/s

hope you get it

please mark