4,356 Answered Questions for the topic Science

Science Physics

10/11/20

A cube is placed in a pool of water. If the cube is 94 cm long on each side, what is the weight of the cube?
A cube is placed in a pool of water. If the cube is 94 cm long on each side, what is the weight of the cube? (Use 1000 kg/m3 for the density of water)
Follows • 1
Expert Answers •1
Science Physics

10/11/20

A 500 kg weather balloon is designed to lift a 1600 kg package.
A 500 kg weather balloon is designed to lift a 1600 kg package. Remember, Weight = mass * 9.8 and Density = [total mass]/[volume of water displaced]  What is the total mass of the balloon and the... more
Follows • 1
Expert Answers •1
Science Physics

10/11/20

Helium has a density of 0.1786 kg/m3, and air has a density of 1.275 kg/m3. If a balloon is filled with 0.1 m3 of helium
Helium has a density of 0.1786 kg/m3, and air has a density of 1.275 kg/m3. If a balloon is filled with 0.1 m3 of helium, how heavy can the balloon itself be before it will no longer float? What is... more
Follows • 1
Expert Answers •1

10/10/20

Is work (w) being done on the gas or by the gas in the cylinder? Will the sign of work be >0 or <0?
Consider a gas enclosed in a cylinder with a piston. If the gas is compressed by lowering the piston, is work (w) being done on the gas or by the gas in the cylinder? Will the sign of work be >0... more
Follows • 2
Expert Answers •2
Science Physics

10/10/20

can you please help me with this question thank you
A football player kicks a ball at an angle of 30 and gives it an initial velocity of 15m/s.  A) What was the time of flight? B) How far horizontally does the ball land? C) How high does the... more
Follows • 1
Expert Answers •2
Science Physics

10/10/20

Please explain the questions below in an easy to understand way and short. (Please don’t give me the formula for the explanation because I don’t understand.)
The link to the projectile experiment (if you need it): https://phet.colorado.edu/en/simulation/projectile-motionWhat is the effect of increasing or decreasing the altitude where the experiment... more
Follows • 1
Expert Answers •1
Science Physics

10/10/20

Please explain the questions below in an easy to understand way and short. (Please don’t give me the formula for the explanation because I don’t understand.)
The link to the projectile experiment (if you need it): https://phet.colorado.edu/en/simulation/projectile-motionWhat is the effect of increasing or decreasing the altitude where the experiment... more
Follows • 2
Expert Answers •1
Science Physics

10/09/20

can you please help me with this question thank you

A cannon fires a cannonball at an angle of 20 and gives it an initial velocity of 100m/s.  A) How far horizontally does the ball land? B) How high does the ball reach?
Follows • 1
Expert Answers •1
Science

10/09/20

how many minutes are in 17 years
Follows • 0
Expert Answers •1

10/09/20

I need help with this problem in depth please
A projectile is shot from the edge of a cliff 125m above ground level with an initial speed of 65 m/s at an angle of 0 above the horizontal. a) Determine the time taken by the projectile to hit... more
Follows • 1
Expert Answers •1

10/09/20

i've spent hours trying to figure this out but i can't
1) A tiger leaps horizontally from a 6.5m height rock with a speed of 3.5m/s. How far from the base of the rock will the tiger land? The tiger will land 4 meters away from the rock2) A projectile... more
Follows • 1
Expert Answers •1
Science Math

10/09/20

If I have 96% overall grade in a class, and I get a 78% on an quiz that is worth 20% of my grade
Follows • 1
Expert Answers •1
Science

10/09/20

Why did the plant that could not photosynthesize stop growing?
Follows • 1
Expert Answers •1
Science

10/08/20

how many atoms are in CaCO3
Follows • 2
Expert Answers •1
Science Math Music History

10/08/20

Does the subject of Music help understanding of other topics?
Follows • 1
Expert Answers •1
Science Physics

10/08/20

If the block accelerates to the right at a rate of 2.87 m/s/s, what is the mass of the block?
Follows • 1
Expert Answers •1

10/08/20

Can someone help me please?
A 45 year-old woman complaining of breast pain was diagnosed with having HER2-positive breast cancer. The patient underwent lumpectomy followed by a period of chemotherapy including adjuvant... more
Follows • 1
Expert Answers •1

10/08/20

Can someone help me please?
A 45 year-old woman complaining of breast pain was diagnosed with having HER2-positive breast cancer. The patient underwent lumpectomy followed by a period of chemotherapy including adjuvant... more
Follows • 1
Expert Answers •1

10/07/20

restricted block on spring
A block of mass m = 4.5 kg slides back and forth on a frictionless horizontal track. It is attached to a spring with a relaxed length of L = 3 m and a spring constant k = 17 N/m. The spring is... more
Follows • 1
Expert Answers •1

10/07/20

If you were a geologist, how will you convince other countries to be alarmed by the destruction brought incase a natural calamity happens?
Follows • 1
Expert Answers •1
Science Earth Science

10/06/20

Why should the countries even if not around the Ring of Fire be alarmed or concerned about the activities on the Ring of Fire?
Follows • 1
Expert Answers •1

10/06/20

What’s the correlation (or is it still relevant) of ethnobotany to our modern day endeavors (as we are on the era of fast phased technology)?
What’s the correlation (or is it still relevant) of ethnobotany to our modern day endeavors (as we are on the era of fast phased technology)?
Follows • 1
Expert Answers •1
Science Physics

10/05/20

An object with zero acceleration is not changing its velocity. True or False?
An object with zero acceleration is not changing its velocity. True or False?
Follows • 1
Expert Answers •1
Science Physics

10/05/20

If an object has zero acceleration, does that mean it has zero acceleration? Yes or no?
If an object has zero acceleration, does that mean it has zero acceleration? Yes or no?
Follows • 1
Expert Answers •1
Science Physics

10/05/20

If an object has zero velocity, does that mean it has zero acceleration? Yes or no?
If an object has zero velocity, does that mean it has zero acceleration? Yes or no?
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.