Answers
Answer:
Option C is the correct answer.
Explanation:
Heat required to melt solid in to liquid is calculated using the formula
H = mL, where m is the mass and L is the latent heat of fusion.
Latent heat of fusion for water = 333.55 J/g
Mass of ice = 0.3 kg = 300 g
Heat required to convert 0.3 kilogram of ice at 0°C to water at the same temperature
H = mL = 300 x 333.55 = 100,375 J
Option C is the correct answer.
Related Questions
The height h (in feet) of an object shot into the air from a tall building is given by the function h(t) = 650 + 80t − 16t2, where t is the time elapsed in seconds. (a) Write a formula for the velocity of the object as a function of time t.
Ken Griffey, Jr's warehouse shot in the 1933 home run derby travelled 93 feet per second for 5 seconds. How far did he hit the ball?
Two bullets of the same size, mass and horizontal velocity are fired at identical blocks, only one is made of steel and the other is made of rubber. The steel bullet has a perfectly inelastic collision with the block, while the rubber bullet has an elastic collision. Which bullet is more likely to knock over the block, or are both equally likely to do so? Justify your choice based on physics principles.
Omar observes that many buildings in his city were built using limestone. He has read that acid rain can damage limestone. He also knows that limestone reacts with acids and that chemical reactions are affected by temperature. With this in mind, he conducts an investigation to see how the amount of damage to the limestone is affected by the amount of acid on the stone.Which statement describes the correct plan for his procedure?Rhonda watched a video taken by a camera that was lifted into the upper atmosphere by a weather balloon. She saw the balloon pop when it reached a certain height. Afterward, Rhonda wondered what effect the air pressure at high altitudes has on the volume of gas in balloons.What scientific practice is Rhonda performing
Answers
Answer:
Breaths per minute is a frequency. The period is its reciprocal.
Explanation:
In simple harmonic motion, a period (T) is the time taken for one point to start in a position and reach that position again, in other words to complete a cycle or lapse. In this case, a period is the time one takes from starting to inspire the air to releasing all of it from the lungs.
In simple harmonic motion, the frequency (f) is how many times a point completes a cycle or lapse in one unity of time (could be one second, one minute, one hour, etc). In this case, the frequency is how many times one breathes in one minute. This is the breathing rate, since it is breathings per minute. Breaths per minute is a frequency.
Period (T) and frequency (f) relate to each other in the following formulae: or
.
Therefore, breaths per minute is a frequency, and since it is related to the period, we say the period is reciprocal to it.
A. sideways
B. up and down
C. back and forth
D. all of the above
Answers
Answer: D i am pretty sure
Explanation:
Answer:
all
Explanation:
Answers
Answer:
Explanation:
solution below
Final answer:
The quantum of energy for one atomic oscillator in tungsten, given the effective interatomic spring stiffness of 360 N/m, the mass of one tungsten atom as 3.074 x 10^-25 kg, and the reduced Planck's constant of 1.0546 x 10^-34 J · s, can be calculated to be approximately 1.33 x 10^-21 J.
Explanation:
To calculate the quantum of energy for one atomic oscillator in tungsten, we will consider the model of an atom being connected to two springs, both having an effective interatomic spring stiffness of four times the given value (90 N/m). This value thus becomes 360 N/m.
One mole of tungsten has a mass of 0.185 kg, thus the mass of one atom can be determined by dividing this value by Avogadro's number (6.0221 x 10^23 molecules/mole), which gives approximately 3.074 x 10^-25 kg.
The quantum of energy, or the energy of one quantum (the smallest possible energy increment), is given by the formula E = ħω, where ħ is the reduced Planck's constant (1.0546 x 10^-34 J · s) and ω is the angular frequency, given by sqrt(k/m), where k is the spring constant and m is the mass.
Substituting the known values into these equations gives ω= sqrt((360)/(3.074 x 10^-25)) and E= (1.0546 x 10^-34) x sqrt((360)/(3.074 x 10^-25)), which results in a quantum of energy of approximately 1.33 x 10^-21 J.
Learn more about Quantum Energy here:
#SPJ3
The gravitational force minus any contact forces acting on an object
The difference between the normal force and the gravitational force acting on an object
The sum of all the forces acting on an object in the same direction
Answers
The sum of all forces acting on an object in the same direction is described for the net force acting on an object.
What is a Net force?
- When the forces are acting in the same direction of movement of the object it can be said as sum of the two individual forces will be equal to the "Net Force" .
- The net force is the combined force of all individual forces acting on an object.
- If the object with the forces in the opposite direction, then the net force will not be equal to the sum of the forces.
Example : If two forces (2 kids pushing in the same direction to move the object big box) act on an object (big box) in the same direction, then the net force is equal to the sum of the two forces. If the kids pushed in the opposite direction, the net force will not occur.
Hence, Option D is the correct answer.
Learn more about Net force,
#SPJ6
Answer:
The sum of all the forces acting on an object in the same direction.
Answers
Answer:
s = 6.25 10⁻²² m
Explanation:
Polarizability is the separation of electric charges in a structure, in the case of the atom it is the result of the separation of positive charges in the nucleus and the electrons in their orbits, macroscopically it is approximated by
p = q s
s = p / q
let's calculate
s = 1 10⁻⁴⁰ / 1.6 10⁻¹⁹
s = 0.625 10⁻²¹ m
s = 6.25 10⁻²² m
We see that the result is much smaller than the size of the atom, therefore this simplistic model cannot be taken to an atomic scale.
Answers
Answer:
Flow stress= 9390Psi
Average flow stress= 4173.33Psi
Explanation:
Given:
Strength Coefficient = 75000psi
Strain hardening Exponent = 0.25
Gauge length = 2inches
Stretch length = 3.3 inches
Flow stress,Yf = 75000 × ln(3.3/2) × 0.25
Yf = 75000× ln(1.65) × 0.25
Yf = 75000× 0.5008 × 0.25
Flow stress = 9390Psi
Average flow stress = 75000× 0.5008 × (0.25/2.25)
Average flow stress= 4173.33psi