endothermic vs exothermic question. please help!

Answer:

the average velocity between two points on the path in the limit that the time (and therefore the displacement) between the two points approaches zero.

Explanation:

The initial velocity of the marble from the given position is  1.49 m/s.

The given parameters;

The time of motion of the marble from the given height is calculated as;

[tex]h = v_yt + \frac{1}{2} gt^2\\\\h = 0 + \frac{1}{2} gt^2\\\\h = \frac{1}{2} gt^2\\\\t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2\times 0.8}{9.8} }\\\\t = 0.404 \ s[/tex]

The initial horizontal velocity of the marble is calculated as follows;

[tex]X = v_0_xt\\\\v_0_x = \frac{X}{t} \\\\v_0_x = \frac{0.6}{0.404} \\\\v_0_x = 1.49 \ m/s[/tex]

Thus, the initial velocity of the marble from the given position is  1.49 m/s.

Learn more here:https://brainly.com/question/21180604

Answer:

[tex]momentum =mv \\ = 8 \times 3 = 24kg.m. {s}^{ - 1} [/tex]

Answer:

The Answer would be C

In a series circuit , the current can only flow through only one path from start to finisb

Answer:

→ Mass is the lightness or heaviness of a body that is free from any force field.

→ Mass is the volume of a body multiplied by its density.

[tex].[/tex]

Answer:

sorry I don't know the answer for this question

Answer:

all of the above

Explanation:

because I know

Answer: all of the above

Explanation:

Each answer - choice has a reasonable relevance when using a website.

Answer:

135.3 cm + 93.46cm

= 228.76 cm

So total length of two fish is 228.76

Answer:A

Explanation:

Answer:

weight= density ×volume× 9.8

mass=density×volume

Explanation:

[tex]weight = 0.12 \times 0.04 \times 0.04 \times 3.14 \times 13600 \\ \times 9.8 = 80.351 \: n \\ \\ mass = 0.12 \times 0.04 \times 0.4 \times 3.14 \times 13600 = \\ = 8.199 \: kg[/tex]

Answer:rings

Explanation:

The acceleration is approximately 4 m/s². Therefore, the correct answer is:

A. 4 m/s²

To determine the acceleration from the graph, we need to look at how the velocity changes over time. Acceleration is defined as the rate of change of velocity with respect to time. In other words, it is the slope of the velocity-time graph.

Looking at the graph, we can see that the velocity changes from 0 m/s to 4 m/s over a time interval of 2 seconds. To calculate the acceleration, we use the formula:

Acceleration (a) = Change in velocity / Change in time

Acceleration (a) = (4 m/s - 0 m/s) / (2 s) = 4 m/s²

So, the acceleration is approximately 4 m/s². Therefore, the correct answer is:

A. 4 m/s²

To Know more about acceleration here

https://brainly.com/question/1643459

#SPJ2

I'm going to assume you mean

[tex]y = 14t^2 - \dfrac{t^2}{2+5t} - 3[/tex]

Taking the derivative with respect to t on both sides gives

[tex]\dfrac{\mathrm dy}{\mathrm dt} = 2\cdot14t - \dfrac{(2+5t)(2t)-t^2(5)}{(2+5t)^2} - 0 \\\\ \dfrac{\mathrm dy}{\mathrm dt} = \boxed{28t - \dfrac{4t+5t^2}{(2+5t)^2}}[/tex]

You could go on to expand the rational expression into partial fractions. One way to do this:

[tex]\dfrac{5t^2 + 4t}{(2 + 5t)^2} = \dfrac{t(5t+2) + 2t}{(2+5t)^2} \\\\= \dfrac{t}{2+5t} + \dfrac{2t}{(2+5t)^2} \\\\= \dfrac15 \cdot \dfrac{t}{\frac25+t} + \dfrac{2t}{(2+5t)^2} \\\\ = \dfrac15 \cdot \dfrac{t+\frac25-\frac25}{\frac25+t} + \dfrac{2t}{(2+5t)^2} \\\\ = \dfrac15 \left(1 - \dfrac{2}{2+5t}\right) + \dfrac{2t}{(2+5t)^2} \\\\ = \dfrac15 - \dfrac{2}{10+25t}+ \dfrac{2t}{(2+5t)^2}[/tex]

and this would give

[tex]\dfrac{\mathrm dy}{\mathrm dt} = 28t - \dfrac15 + \dfrac2{10+25t} - \dfrac{2t}{(2+5t)^2}[/tex]

let's find the acceleration first :

now, we know that :

hence, mass = 6kg

The impact speed will be

v^2 = 2*9.8*1.3

v^2 = 25.48

v= 5.04 m/s or O C. 5.0 m/s

Legend has it that a young Isaac Newton was sitting under an apple tree when he was bonked on the head by a falling piece of fruit, a 17th-century “aha moment” that prompted him to suddenly come up with his law of gravity.

Answer:

I THINK it’s A

Explanation:

Because all the other answers don’t make sense.

Answer:

C

Explanation:

Answer:

the total mass of the objects multiplied by their velocity.

Answer:

14 km away and a turn of 90°

Explanation:

brailiest pls pls pls

Answer:

wavelength = 2.5 m

Explanation:

λ=. v/f

= [tex]\frac{150m/s}{60Hz} = 2.5m[/tex]

Answer:

convection: heat transfer by movement of currents inside a liquid, currents in the mantle, temp inside the house, red dye rises blue dye sinks,

radiation: heat from a bonfire, transfer of energy through space,

conduction: frying pan to cooking egg, candle heating up foil to chocolate chips

Explanation:

Answer:

1. The weight of the column of water above

2. Due to Gravity

(I would say there are two answers for this question)

Explanation:

1.

The pressure in a liquid is due to the weight of the column of water above. Since the particles in a liquid are tightly packed, this pressure acts in all directions. For example, the pressure acting on a dam at the bottom of a reservoir is greater than the pressure acting near the top.

2.

Fluid pressure can be caused by gravity, acceleration, or forces in a closed container. Since a fluid has no definite shape, its pressure applies in all directions. Fluid pressure can also be amplified through hydraulic mechanisms and changes with the velocity of the fluid.

Answer:

i think that it is b but I could be wrong

Answer:

Option 2!

Explanation:

According to F = ma, force increases as mass increases. (Assuming acceleration is constant.)