Answers
Explanation:
Related Questions
Please help! Will mark brainliest.
Answers
Answer:
736.2
Explanation:
Work = mass * gravity * height
W = m * g * h
W = 6.26 * 9.8 * 12
W= 736.176 Joules
Rounding to 736.2.
Ans: 10.0096 cm
What should be the initial lengths of steel and copper rods so that the length of steel rod is 5 cm
larger than the copper rod at all temperatures?
An iron sphere has a radius of 10 cm at a temperature of 0°C. Calculate the change in volume of the
Ans: 1.383 cm
sphere it is heated 100°. 9.3710-
Ans: 17 cm, 12 cm
Answers
Answer:
dab is the answerjdjdjnejee
Mercury is a liquid metal having a density of 13.6 g/mL. What is the
volume of 0.45 kg of mercury metal?
Answers
Answer:
[tex]\boxed {\boxed {\sf v \approx 33.088 \ mL}}[/tex]
Explanation:
The formula for density is:
[tex]d= \frac{m}{v}[/tex]
where m is the mass and v is the volume.
The mass is 0.45 kilograms and the density is 13.6 grams per milliliter. The density is given in grams, so we must convert the mass.
There are 1000 grams in 1 kilogram or [tex]\frac{1000 \ g} {1 \ kg}[/tex]. We can multiply the mass by this ratio.
[tex]0.45 \ kg * \frac{1000 \ g} {1 \ kg} = 0.45 * 1000 \ g = 450 \ g[/tex]
Now we have values for the mass and density:
[tex]13.6 \ g/mL =\frac{450 \ g}{ v}[/tex]
Cross multiply.
[tex]\frac {13.6 \ g/mL}{1} =\frac{450 \ g}{ v}[/tex]
[tex]13.6 \ g/mL * v=450 \ g * 1 \\13.6 \ g/mL * v=450 \ g[/tex]
We are trying to find the volume, so we must isolate that variable.
13.6 and v are being multiplied. The inverse of multiplication is division. Divide both sides by 13.6
[tex]\frac {13.6 \ g/mL*v } { 13.6 \ g/mL} = \frac{ 450 \ g} {13.6 \ g/mL}[/tex]
[tex]v= \frac{ 450 \ g} {13.6 \ g/mL}[/tex]
The grams will cancel.
[tex]v= 33.0882353 \ mL\\v \approx 33.088 \ mL[/tex]
The volume is about 33.088 milliliters.
How many kilocalories (Calories) does the snack bar contain?
Answers
Answer:
See the explanation below.
Explanation:
Attached is a picture of a chocolate bar that can be easily found on the market. In this picture, we see the table of contents with the amount of energy that depends on the mass in grams of the chocolate bar.
We see that for the bar size of 100G, the energy value is 483 [kcal].
We can see that the energy depends on the size of the chocolate bar.
Answer:
403.63
Explanation:
I'm assuming you were asking for the last question on the Calorimetry gizmo.
A5 kg frisbee is thrown from rest to a final speed of 12 m/s. What is the impulse of the frisbee?
Answers
Answer:
60kgm/s
Explanation:
Given parameters:
Mass of frisbee = 5kg
Final speed = 12m/s
Unknown:
Impulse of the frisbee = ?
Solution:
The impulse of the frisbee is the same as the change in momentum.
It is given as:
Impulse = mass (Final velocity - Initial velocity)
Impulse = 5(12 - 0) = 60kgm/s
What variable is the dependent variable?
A. Time
B. Temperature
Answers
Answer:
the answer is b temperature
HELP!!!!!
Explain how the sea star reproduce and why the fisherman returned to more sea stars. (page 29 - 32) (book in case needed: california inspire science reproduction of organisms grade 6 integrated unit 2 student edition) (Two parts for full points - 10 points for how the sea star reproduces including what it is called and 10 points to explain why the fisherman found more stars.) <----- That is part of a question not the points i can give you,
Answers
Answer:
A sea star that has the ability to regenerate amputated limbs must first undergo a repair phase to heal the exposed wound. Once the wound is healed, the sea star can begin to generate new cells, which in turn, sparks new growth. Regeneration can take anywhere from several months to years. Reproduction: Sea stars are broadcast spawners. Males release sperm into the water and females release eggs. The fertilized eggs hatch into a larval form that lives as plankton, sometimes for months, before settling on the sea floor in its adult form..
A train travels 25km in 5 hrs. How fast is the train going?
Answers
Answer: 5km per hour
If the train is going 25km in 5 hours, you can figure out how many kilometers per hour it is traveling by dividing 25km by the 5 hours.
25/5 = 5km per hour
Explanation:
Answer:
its 60
Explanation:
it just is man
11. A bowling ball has a mass of 7 kg and a velocity of 3 m/s.
(A) What is the ball's momentum?
Answers
Answer: 21 kg x m/s
Momentum can be found using the equation p = mv, or momentum = mass times velocity.
Therefore, to find the momentum of the bowling bowl, you can plug the mass and velocity values into the equation to get p = (7kg)(3m/s)
Solve the equation to get a momentum of 21kg x m/s
I hope I could help :)
A water rocket of mass 2.5 kg is launched vertically upwards from the surface of the Earth. It produces a steady thrust of 75 N. What is its acceleration?
Answers
Answer:
a = 30 [m/s²]
Explanation:
To solve this problem we must use Newton's second law, which tells us that the sum of forces on a body is equal to the product of mass by acceleration. In this way, we have the following equation.
∑F = m*a
where:
m = mass = 2.5 [kg]
a = acceleration [m/s²]
F = force = 75 [N]
Now replacing:
[tex]75=2.5*a\\a=75/2.5\\a=30[m/s^{2} ][/tex]
What is the guage pressure of an object with a mass of 30 kg and 5ft height?
Answers
Answer: D=pg
Explanation:
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15 mm Hg is the guage pressure of an object with a mass of 30 kg and 5ft height.
What is gauge pressure?The measurement of pressure in relation to atmospheric pressure is known as gauge pressure. The zero point for this pressure measurement is set at 1 atm. With relation to atmospheric pressure, pressure is measured.
When a car climbs a mountain, the gauge pressure rises as the air pressure falls, but the tire's absolute pressure stays the same, assuming no tire leaks.
guage pressure = mass×height
= 30×5
=15 mm Hg
Therefore, 15 mm Hg is the guage pressure of an object with a mass of 30 kg and 5ft height.
To know more about gauge pressure, here:
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