Assume that if the shear stress in steel exceeds about 4.00 108 N/m2, the steel ruptures.
(a) Determine the shearing force necessary to shear a steel bolt 1.50 cm in diameter in Newtons.
(b) Determine the shearing force necessary to punch a 1.75-cm-diameter hole in a steel plate 0.550 cm thick. In Newtons.

The energy efficiency of the mixer is 70%.

The Sankey diagram shows the amount of energy absorbed, the amount of useful energy, and the amount of non-useful energy.

The efficiency of a device

η = (U/I) × 100%

I = U + W

100% = U + 30%

U = 100% - 30%

U = 70%

The efficiency of the mixer

η = (U/I) × 100%

η = (70%/100%) × 100%

η = (7/10) × 100%

η = 70%

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I would choose the option B.

F = ma

a = 75 / 25 = 3 m/s^2

The acceleration of the given object will be equal to 3 m/s². Therefore, option (B) is correct.

Acceleration of an object can be explained as the change in the velocity of an object with respect to time. The acceleration is a vector quantity as it exhibits magnitude and direction. Acceleration can be calculated from the 2nd derivative of the position of the object w.r.t. time.

The force is the product of the mass and acceleration, according to Newton's second law of motion.

F = ma

And,   a = F/m

From the above formula, we ca say that the acceleration is inversely proportional to mass.

Given, the force acting on the object, F = 75 N

The mass of the object, m = 25.0 Kg

The acceleration of the given object, a = 75/25 =3 m/s²

Therefore, the acceleration of the object is equal to 3 m/s².

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Answer:

As the temperature is increased the more the energy store

Answer:

100 m

Explanation:

if the car travels at 10 m/s for 10 seconds it would travel 100 m during that time.

10*10 = 100

The entropy of the gas mixture system on increasing the pressure. Therefore, the change in entropy (ΔS) of the system will be negative.

The entropy of a system can be described as a measure of spontaneous changes that occur in a system. Entropy can be defined as the tendency of the universe towards disorder.

Entropy can be measured by the randomness or disorder of a thermodynamic system and is expressed by ‘S’. The value of entropy of a system is dependent upon the amount of substance therefore, it is an extensive property.

The entropy change depends on changes in quantities such as pressure, temperature, volume, and the number of moles of substance present in the system.

If the pressure on the piston will be increased in the gas mixture, there is a lesser volume to distribute the molecules, therefore, the final entropy of the system will be decreased and the entropy change will be negative.

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The heat required to melt all the ice is Q = 2204.49 kJ

Mass = Density * Volume and Volume = Area * Width

The area of the ice is 1.2m² and the width is 0.80cm

Then volume of ice = 1.2 m² * 0.008 m = 0.0096 m³

So there is a mass of ice on the windshield

Mass (m) = 917 kg/m³ * 0.0096 m³ = 0.9312kg

The heat that must be reached in order for ice to melt

Q sen is the sensible heat up to melting temperature (T m = 0°C , assuming pressure =1 atm as windshield is exposed to atmosphere)

Let Q lat be the latent heat of melting ice at its melting temperature

1) Q sen = m ice * c ice * ( T final - T initial) = 0.9312 kg * 2.108 kJ / Kg °C ( 0°C - (-7°C)) = 13.74 kJ

2) Q lat = m ice * L ice = (0.9312 kg * 335 kJ/kg ) = 311.952kJ

Thus Q sum = Q sen + Q lat = 13.74 kJ + 311.952 kJ = 325.692 kJ

This is the minimum amount of heat required, since we have not considered heat losses to the surroundings.

The specific heat of ice (c ice) is 2.108KJ/Kg°C and the latent heat of ice and snow (L ice) is 335KJ/Kg

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The work function of the metal in units of EV is ∅0 = 1.9 eV.

According to the photoelectric effect, the total energy supplied to the metal surface is utilized to remove the electrons and to increase the kinetic energy of the electrons. Thus,

hc / λ = ∅0 +KE

(6.625×\(10^{-34}\) J-s) (3×\(10^{8}\) m/s) / 515×\(10^{-9}\)m = ∅0 + 0.5eV

∅0 = 3.86×10-19 J - 0.5 eV

∅0 = (3.86×10-19 J (1 eV / 1.6×10-19 J)) x -0.5 eV

∅0 = 1.9 eV (approximately)

Wavelength is the gap among equal points (adjoining crests) in the adjacent cycles of a waveform signal propagated in space or along a cord.it's miles the distance among consecutive corresponding points of the equal segment on the wave, which include two adjoining crests, troughs, or 0 crossings, and is a feature of both traveling waves and standing waves, as well as other spatial wave patterns. The inverse of the wavelength is known as the spatial frequency. Wavelength is generally particular by way of the Greek letter lambda (λ).

The time period wavelength is likewise now and again applied to modulated waves, and to the sinusoidal envelopes of modulated waves or waves shaped by way of interference of several sinusoids. a standing wave is an undulatory movement that remains in a single location. A sinusoidal status wave consists of stationary factors of no movement, called nodes, and the wavelength is twice the gap between nodes.

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A helium atom (mass = 4m) moving with speed v collides elastically with a deuterium (hydrogen 2) atom (mass = 2m) at rest.  The percentage change in the kinetic energy of the helium atom after the collision is 50%.

Generally, This is because in an elastic collision, kinetic energy is conserved, and the total kinetic energy of the system is the same before and after the collision.

The helium atom has twice the mass of the deuterium atom, so it has half the velocity after the collision.

Since kinetic energy is given by 1/2mv^2, the velocity is squared, so a decrease in velocity by a factor of two results in a decrease in kinetic energy by a factor of four, which is equivalent to a decrease of 50%.

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The time taken for a crest of the transverse wave to travel the length of the wire is 0.13 s.

To solve the problem, we need to use the formula T = d/v, where T is the time taken for a wave to travel a distance d, and v is the velocity of the wave. We can find the velocity of the wave by using the formula v = fλ, where f is the frequency of the wave and λ is its wavelength.

Substituting the given values, we get v = (280 Hz)(0.60 m) = 168 m/s. Substituting this value and the length of the wire, d = 6.0 m, into the formula for T, we get T = (6.0 m)/(168 m/s) = 0.036 s for one round trip, or 0.13 s for a one-way trip.

Therefore, it takes 0.13 s for a crest of the transverse wave to travel the length of the wire.

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Answer:

a basis or standard for evaluation, assessment, or comparison; a criterion.

Explanation:

Definition of reference point. : something that is used to judge or understand something else The professor used the study as a reference point for evaluating and discussing other theories.

Answer:

something that is used to judge or understand something else

Explanation:

The professor used the study as a reference point for evaluating and discussing other theories.

Answer:

A supply of compressed air is maintained aboard the submarine in air flasks for life support and for use with the ballast tanks. In addition, the submarine has movable sets of short "wings" called hydroplanes on the stern (back) that help to control the angle of the dive.

Explanation:

Hope this helped u

Have a nice day

Answer:

Physical science

Explanation:

The average velocity is given by

Where d is the distance covered and t is the time taken.

For the given case, we have

d = 75 m

t = 8.9 s

Therefore, the average speed of the hockey player is 8.43 m/s

The hockey player is moving at a speed of 9.5 m/s.

mass is always constant where as weight depends on gravity

mass is fundamental physical quantity where as weight is a derived quantity

mass is the measure of amount of substance where as weight is a force

Answer: 3 differences ig man

Explanation:

1 difference between mass and weight is mass is how much matter an object contains whereas weight is the measurement of gravitational force on said object.

Difference 2 is that weight changes depending on how much gravity a planet/area has but mass does not change.

The last difference is that mass is measured using a pan balance, a triple-beam balance, lever balance or electronic balance while weight is measured using a spring balance.

Answer: It produces uneven heating of Earth's surface by the sun

Explanation:

The Earth's tilt affect the climate by producing uneven heating of the Earth's surface by the Sun. Thus, the correct option is A.

The earth's spin axis is tilted with respect to the orbital plane of the planet. This is what actually causes the change in seasons. When the earth's axis points are towards the sun, it is summer for that hemisphere. However, when the earth's axis points are away, winter season can be expected.

The greater the Earth's axial tilt angle, the more extreme will be the seasons are, as each of the hemisphere receives more solar radiation during its summer season, when the hemisphere is tilted towards the Sun, and less during the winter season, when it is tilted away.

Therefore, the correct option is A.

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Explanation:

uasjwwbwjwbwia GJ wkwkjwnwnwjwjjwjwd7beba s

Answer:    Answer: The object moves forward at 5 m/s, stops, and then changes velocity.

Explanation:

With the information given in the question we can graph the points (image attached).

As we can observe, in the first segment of the graph the velocity is increasing linearly (at a constant rate) and is 5 m/s, then in the second segment we can see the position of the object remains the same from second 2 to second 4, which means the object is stopped.

Finally, in the third and last segment, we can observe a change in velocity (at a negative constant rate, because is decreasing), which is decreasing until the object stops.

Explanation:

Answer:

3.67 m/s

Explanation:

Answer:

In rectilinear motion F = M a describes the motion of a particle

Γ = I α      (torque equals moment of inertia times angular acceleration is the equivalent law in circular motion)

A fixed central force is perpendicular to the direction of motion and cannot change the torque about the point. (for mechanical forces)

However, for electrical forces, F = Q V X B and a changing magnetic field at the center of motion can produce a force perpendicular to the direction of motion.

Perhaps, the question needs to be more specific.

Answer:

d. 4 m/s²

Explanation:

pls mrk me brainliest

Answer:

Explanation:

Kinematic equation: Final velocity^2 = Initial velocity^2 + 2*acceleration*displacement

As the ball is dropped from rest, initial velocity = 0.

Acceleration = gravity = 9.8m/s^2

Displacement = 7m

So velocity just before it hits ground

= sqrt( 2*9.8*7)

= 11.71m/s

One example of a solid solute that does not follow the general trend of increasing solubility with increasing temperature is calcium sulfate dihydrate (CaSO₄·2H₂O) in water.

This compound is commonly known as gypsum, which is a mineral that occurs naturally in many parts of the world.

Gypsum exhibits a decrease in solubility with increasing temperature, which is contrary to the general trend. At room temperature, the solubility of gypsum in water is about 0.2 g/100 mL, but as the temperature increases, the solubility decreases. At 100 °C, the solubility of gypsum in water is only about 0.1 g/100 mL.

This phenomenon is due to the fact that the dissolution of gypsum in water is an exothermic process, which means that heat is released when the compound dissolves. Therefore, as the temperature increases, the solubility of gypsum decreases because the process becomes less thermodynamically favorable.

Gypsum is an important example to consider in various industrial and environmental applications, including the use of gypsum in construction, the control of scaling and corrosion in industrial processes, and the treatment of wastewater.

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Answer:

Unit conversion is very important because the rest of the world other than three countries uses the metric system. So, converting units is important in science because it uses the metric system. The metric system is measurements like cm, m, l, mL, etc...

Explanation:

Units can: Help to show another person the exact amount you have. Assist in solving a mathematical problem, especially in chemistry, where you can follow the units to get to the answer. Show which measurement system the person is using (i.e. metric or standard)

Hope this helps :)

Answer:

Glycolysis

Pyruvate

Krebs Cycle

Electron Transport Chain

Explanation:

The concept map on ATP production shows the process of cellular respiration in living organisms.

Cellular respiration begins with glucose which is broken down in the process of glycolysis that occur in cytoplasm and gives 2 ATP. Glycolysis gives pyruvate as end product that enter in the process of Krebs Cycle or citric acid cycle as a aerobic process, that occur in mitochondria and produces 2 ATP. This energy is then used in Electron Transport Chain to pump high energy electrons and H+ that produces 36 ATP.

Answer: d constint speed

Explanation: im 15 and no the answer

Answer: 3.3 x 10^-28 J

Explanation: just answered on a quiz!! :)