if two temperatures differ by 25 degrees on Celsius scale, the difference of temperature on Fahrenheit scale is?


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Answer:

        I presume that by O you mean zero.

a = (v2 - v1) / t for uniformly accelerated motion

If v2 = v1 then any velocity is theoretically possible. (with no acceleration)

Answer:

We learned in the previous section that temperature is proportional to the average kinetic energy of atoms and molecules in a substance, and that the average internal kinetic energy of a substance is higher when the substance’s temperature is higher.

If two objects at different temperatures are brought in contact with each other, energy is transferred from the hotter object (that is, the object with the greater temperature) to the colder (lower temperature) object, until both objects are at the same temperature. There is no net heat transfer once the temperatures are equal because the amount of heat transferred from one object to the other is the same as the amount of heat returned. One of the major effects of heat transfer is temperature change: Heating increases the temperature while cooling decreases it. Experiments show that the heat transferred to or from a substance depends on three factors—the change in the substance’s temperature, the mass of the substance, and certain physical properties related to the phase of the substance.

The equation for heat transfer Q is

Q = mcΔT,

Explanation:

pls brainliest

Answer:

  2.38 mW

Explanation:

Power is work per unit time. Work is the product of force and distance. That means ...

  [tex]\text{power}=\dfrac{\text{force}\times\text{distance}}{\text{time}}=\text{force}\times\dfrac{\text{distance}}{\text{time}}\\\\\text{power}=\text{force}\times\text{velocity}[/tex]

Using the given values of force and velocity, the tadpole's power output is ...

  P = (0.028 N)(0.085 m/s) = 0.00238 W = 2.38 mW

The tadpole's power output is about 2.38 mW.

The block's potential energy at the top of the incline (at a height h from the horizontal surface) is equal to its kinetic energy at the bottom of the incline, so that

mgh = 1/2 mv²

where v is its speed at the bottom of the incline. It follows that

v = √(2gh)

If the incline is 20.4 m long, that means the block has a starting height of

sin(15°) = h/(20.4 m)   ⇒   h = (20.4 m) sin(15°) ≈ 5.2799 m

and so the block attains a speed of

v = √(2gh) ≈ 10.1728 m/s

The block then slides to a rest over a distance d. Kinetic friction exerts a magnitude F over this distance and performs an amount of work equal to Fd. By the work-energy theorem, this quantity is equal to the block's change in kinetic energy, so that

Fd = 0 - 1/2 mv²   ⇒   d = (-1293.58 J)/F

By Newton's second law, the net vertical force on the block as it slides is

∑ F [vertical] = n - mg = 0

where n is the magnitude of the normal force, so that

n = mg = (25 kg) g = 245 N

and thus the magnitude of friction is

F = -0.16 (245 N) = -39.2 N

(negative since it opposes the block's motion)

Then the block slides a distance of

d = (-1293.58 J) / (-39.2 N) ≈ 32.9994 m ≈ 33 m

Answer:

Equivalent resistance: 13.589 Ω

Explanation:

R series = R1 + R2 + R3 ...

[tex]\frac{1}{R_{eq} } = \frac{1}{R1} +\frac{1}{R2} +\frac{1}{R3} ...[/tex]

Find the equivalent resistance of the right branch of the circuit:

[tex]R_{eq} = R_{2} +R_{3} \\R_{eq} = 20.7 + 25.8 = 46.5 ohms[/tex]

[tex]\frac{1}{R_{eq} } = \frac{1}{19.2} +\frac{1}{46.5}\\\\\frac{1}{R_{eq} } = 0.0735887097\\\\R_{eq} = 13.5890411[/tex]

Answer:

The answer is for your question is :

Explanation:

True

Answer:

the branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion.

and/or

Kinematics is the study of motion of a system of bodies without directly considering the forces or potential fields affecting the motion. In other words, kinematics examines how the momentum and energy are shared among interacting bodies.

Answer:

Explanation:

Consider first case with incline:

It is frictionless so the only force on mass is gravity, g.

The force has two components: one that is along the incline direction and another perpendicular to the incline.

The perpendicular component does no work as it is perpendicular to the direction of motion.

The incline component of gravity = g*sinθ

=10*sin30deg; using 10m/s^2 for g

Length of incline = 5/sinθ = 5/sin30deg

Work done = force * distance

= mass * acceleration * distance

= 5 * 10*sin30deg * 5/sin30deg

= 250J

Mass starts from rest so its initial speed=0

Using the kinematic equation: final speed^2 = initial speed^2 + 2*acceleration*distance

Final speed^2 = 0 + 2*(10*sin30deg)*(5/sin30deg)

= 2*10*5

=100

Final speed = 10m/s

Now for the second case of vertical drop:

Work done by gravity = mass * gravity * height

= 5 * 10 * 5

= 250J

Using conservation of energy, Final kinetic energy = Work done by gravity

1/2 * Mass * Final speed^2 = 250

Final speed^2 = 2 * 250 / 5 = 100

Final speed = 10m/s

In both scenarios, the work done by gravity and the mass' final speed are the same.

Answer:

Let T + m g = m v^2 / R      

At the top of the loop T can be zero and the force of gravity provides the necessary centripetal force

v^2 / R = a = g

a = 8^2 / 9.4 = 6.81 m/s^2

Answer:

D: Increase the distance between the objects.

E: Decrease the mass of one of the objects.

Answer:

A gun whose mass is 0.8kg fires a bullet whose mass is 0.016kg with a velocity of 700m/s, calculate the velocity of the gun recoils.

→ 14m/s

Hope its help

Answer: Can't see the graph clearly.

Answer:

School labs are a great place for students which help them enhance their learning by understanding the theoretical concepts of science which are taught in classrooms. Well-designed laboratories not only make science experiments fun but also help students in achieving good academic results.

Explanation:

hope this helps :)

The products have different arrangement of atoms to the reactants.

Products are substances which are produced from the chemical changes that occur in the substances.

Reactants are the substances which form products as a result of  chemical changes that occur in them.

The reactants and products in a chemical reaction contain the same atoms, but the arrangement of their atoms differs.

Therefore, the products have different arrangement of atoms to the reactants.

Learn more about reactants and products at: https://brainly.com/question/6421464

#SPJ1

Answer:

27 m/s

Explanation:

Positive direction: up

v₀ = 16 m/s, y₀ = 24 m, g = -9.8 m/s², y = 0 (ground)

Use v² - v₀² = 2g(y - y₀)

v² - 16² = 2*(-9.8)*(0 - 24)

v² = 256 + 470.4 = 726.4

so v = 27 m/s

Answer:

About 26.95 m/s.

Explanation:

We can let downwards be the positive direction and upwards be the negative direction.

The ball is thrown upwards at a speed of 16 m/s. (Hence, the initial velocity is expressed as -16 m/s.)

Find the time it took for the ball to travel to its highest point. At this point, its velocity is zero. Find time t using a kinematic equation. In the vertical direction, the acceleration is gravity:

[tex]\displaystyle \begin{aligned} v_y & = v_i + gt \\ \\ (0) & = (-16\text{ m/s}) + (9.8\text{ m/s$^2$})t \\ \\ t &= \frac{80}{49} \text{ s}\end{aligned}[/tex]

Find the distance it traveled during this time by using the following kinematic equation:

[tex]\displaystyle \begin{aligned} y & = v_{i}t + \frac{1}{2}gt^2 \\ \\ & = (-16\text{ m/s})\left(\frac{80}{49}\text{ s}\right) + \frac{1}{2}(9.8\text{ m/s$^2$})\left(\frac{80}{49}\text{ s}\right)^2 \\ \\ & \approx -13.0612 \text{ m}\end{aligned}[/tex]

Hence, the ball traveled a total of 13.0612 meters when thrown into the air.

Thus, its total height is:
[tex]\displaystyle h_\text{max} = 24 \text{ m} + 13.0612 \text{ m} = 37.0612\text{ m}[/tex]

At this point, it will fall back down with an initial velocity of zero.

Find the time it took for the ball to hit the ground below the cliff:

[tex]\displaystyle \begin{aligned} y & = v_{i}t + \frac{1}{2}gt^2 \\ \\ (37.0612\text{ m}) & = (0\text{ m/s})t + \frac{1}{2}(9.8\text{ m/s$^2$})t^2 \\ \\ t & \approx 2.75\text{ s} \end{aligned}[/tex]

Find its final velocity using a kinematic equation:

[tex]\displaystyle \begin{aligned} v_{f} & = v_{i} + gt \\ \\ & = (0\text{ m/s}) + (9.8\text{ m/s$^2$})(2.75\text{ s}) \\ \\ & = 26.95\text{ m/s}\end{aligned}[/tex]

In conclusion, the final velocity of the ball is about 26.95 m/s.

The volume of the gas is calculated as 1827.87cm^3

Data;

To find the final volume of oxygen, we have to use Boyle's law which states that the volume of a gas is inversely proportional to the pressure of the gas provided that temperature remains constant.

v ∝ 1/p

[tex]v = \frac{k}{p} \\k = pv\\p_1 v_1 = p_2 v_2[/tex]

Let's substitute the values into the equation and solve.

[tex]p_1v_1 = p_2v_2\\101325*300 = 16630 * v_2\\30397500 = 16630v_2\\v_2 = \frac{30397500}{16630} \\v_2 = 1827.87cm^3[/tex]

The volume of the gas is calculated as 1827.87cm^3

Learn more on Boyle's law here;

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Answer: Not that much gravitationally would change seasons and things of that matter would stay the same but they would be much colder, and  Earth would probably freeze solid.

Explanation:

The mechanical advantage of the lever is 3 and the right option is A.) 3.

Mechanical advantage can be defined as the ratio of load to effort in a machine.

To calculate the mechanical advantage of the lever, we use the formula below.

Formula

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, The mechanical advantage of the lever is 3 and the right option is A.) 3.

Learn more about mechanical advantage here: https://brainly.com/question/19038908

Traits are the expression of alleles combination in a genotype, and depend on the inherited alleles and the inheritance pattern. Option D. Jane can say that she and Matt inherited eye color from their mother.  

Traits are the expression of the allelic combination in a genotype. The expressed phenotype will depend on the alleles inherited from each parent and the inheritance pattern.

According to the segregation principle, alleles separate during gamete formation. And during fertilization, two gametes from different parents merge to produce a zygote.

Each gamete carries one of the parental alleles. During fertilization occurs a combination of alleles that will express a phenotype.

Traits inheritance do not depend on each other, they are inherited by separate.

In the exposed example, eye color and hair type expression depend on the combination of the alleles in each genotype. And each trait is independently inherited from the other one.

Available data:

Mother

Father

Jane

Matt

A. Jane and Matt look like their mother ⇒ Only Matt looks like the mother because both of them have brown eyes and curly hair. Jane has brown eyes but straight hair.

B. Only a father can pass on the color of eyes ⇒ Both parents can pass the color of eyes, no only the father.

C. Hair type is not passed down from parent to child ⇒ Hair type is inherited from parents.

D. Jane and Matt inherited eye color from their mother ⇒ Yes, both of them inherited eye color from their mother. The three of them have brown eyes.

Based on her table, Jane can say that she and Matt inherited eye color from their mother. Option D.

You will learn more about trait inheritance at

https://brainly.com/question/12372680

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Answer:

ok yellow im new i mean hellow

The two forces for a 90 degree angle.

Use the Pythagorean theorem:

sqrt(8^2 + 8^2) = sqrt(64 + 64) = sqrt(128)

= 11.31

Answer: C. 11 N

If the electrical resistance of a household appliance becomes four times larger than the original value, AND the voltage at the outlet doesn't change, then the appliance starts to use 1/4 of the original current.

I  =  E / R

the relevance of studying physics in relation to mining engineering

The initial velocity of the train  is 12.56 m/s.

The initial velocity of the train can be determined by using the first kinematic equation as shown below;

v = u + at

u = v - at

where;

u = 30.56 - (36 x 0.5)

u = 12.56 m/s

Thus, the initial velocity of the train  is 12.56 m/s.

Learn more about initial velocity here: https://brainly.com/question/19365526

Answer:

photosynthesis is the process where by plants/green plants make their own food