4,347 Answered Questions for the topic Science

Science Physics

06/21/24

Wait, so does an object itself actually physically do something when light is reflected or refracted on the item to show the item color? Like for instance a red ball?

Wait, so does the object itself actually physically do something when light is reflected or refracted on the item to show the item color? Like for instance a red ball? Is the object itself... more
Follows • 1
Expert Answers •2

06/13/24

In need of writing tutor to review my research paper
Hello! As the title already emphasizes, I'm looking for a writing tutor is who is available to proofread and edit my college research paper either today or tomorrow! Btw, my paper is for a health... more
Follows • 2
Expert Answers •1
Science Geology

06/05/24

There is a rock. You know nothing about it. Theoretically, what other kind of rock could it form?
There is a rock. You know nothing about it. Theoretically, what other kind of rock could it form? Choose all that apply!A. Sedimentary rockB. Igneous rockC. Metamorphic rockD. Not enough... more
Follows • 2
Expert Answers •1
Science Physics

05/28/24

Does a solid object itself actually “do anything” to reflect light?
So does the solid object itself - in this instance a ball do anything? Like does the ball itself absorb and reflect, or is that really the atoms and molecules that make up the solid. (for example:... more
Follows • 3
Expert Answers •1
Science

05/16/24

what does the earth rotate around if the earth was created before the sun
Follows • 1
Expert Answers •1
Science

05/14/24

energy science math
John is a crane operator and drops his 0.025 kg wallet out of the window of his crane. When the wallet is 21.5 m from the ground it has a total mechanical energy of 2.26x10^1J. What is the wallets... more
Follows • 1
Expert Answers •1
Science

05/12/24

Calculating energy
A 45.45 kg diver leaps high into the air to begin her dive. At the top of her leap they have a total mechanical energy of 7.50x104 and are moving at 9.23 m/s. Calculate the gravitational potential... more
Follows • 1
Expert Answers •1
Science

05/12/24

Tyler is jumping on a trampoline, he has distorted the fabric of the trampoline by 0.32 m using a force of 535 N. What is the energy stored in the trampoline?

Tyler is jumping on a trampoline, he has distorted the fabric of the trampoline by 0.32 m using a force of 535 N. What is the energy stored in the trampoline?
Follows • 1
Expert Answers •1
Science

05/12/24

Tina squeezes a spring, she knows the spring is storing 321 J of energy and that the spring was distorted by 0.070 m. What is the force Tina is applying to the spring?
Tina squeezes a spring, she knows the spring is storing 321 J of energy and that the spring was distorted by 0.070 m. What is the force Tina is applying to the spring?
Follows • 1
Expert Answers •1
Science Biology

05/03/24

True or False: There is as much water on Earth now as there was millions of years ago
Follows • 1
Expert Answers •1
Science

05/02/24

hess's law Enthalpy of reaction
Applying Hess's LawConsider the chemical equations shown here.What is Hrxn for the reaction shown below?
Follows • 1
Expert Answers •1
Science Physics

05/02/24

A 40-cm -long icicle hangs from the eave of a house on a day when the temperature is -2.0ºC . By how many millimeters does the icicle shrink if a bitterly cold wind drops the temperature to -30ºC?
Follows • 1
Expert Answers •1

05/01/24

Chromosomal and chromatid numbers
Mitosis:Prophase. Somes= 2 Tids= 4Metaphase. Somes = 2. Tids= 4Anaphase. Somes= 4. Tids = 4Telophase. Somes = 4. Tids =4Cytokinesis.Somes = 2. Tids= 2Meiosis i:Prophase. Somes= 2 Tids=... more
Follows • 1
Expert Answers •1
Science

04/17/24

A student combines 5 g of sodium with 10 g of water and produces 8 grams of sodium hydroxide and hydrogen. How many grams of hydrogen gas are produced?
Follows • 1
Expert Answers •1
Science Math Physics Physics

04/15/24

Doppler-effect problem
Please help.I found this interesting problem on the internet, but I don't know how to start it:These are the questions:At what frequency do astronauts hear the hum?What frequency should the radio... more
Follows • 2
Expert Answers •1

03/31/24

Check all of the following that are true for the series

Check all of the following that are true for the series from n=1 to ∞ ∑ (5-cosn)/n.A. This series convergesB. This series divergesC. The integral test can be used to determine convergence of this... more
Follows • 1
Expert Answers •2

03/23/24

Tricky interesting physics problem about magnetism
Can someone please help in finding a solution? I've never solved a problem like this one and it seems interesting but I can't get my head around it.The problem goes like this:The interacting... more
Follows • 1
Expert Answers •1

03/17/24

Please help with this magnet physics problem
On the internet, I came across an interesting physics problem. Can you help with this:The weight of a small, flat refrigerator magnet is "M". We place the magnet on the refrigerator's vertical... more
Follows • 1
Expert Answers •1

03/16/24

What percent of the AP Biology Exam is over Ecology?
Follows • 1
Expert Answers •1

03/16/24

Why do we assume that oxygen was not present in the original atmosphere?
Follows • 1
Expert Answers •2

03/16/24

Please help with this magnet physics problem
On the internet, I came across an interesting physics problem. Can you help with this:The weight of a small, flat refrigerator magnet is "M". We place the magnet on the refrigerator's vertical... more
Follows • 0
Expert Answers •1

03/14/24

Coaxial cable-physics problem
Please help with this problem.Problem:Power P is transmitted over a distance D on a coaxial cable. The radius of the cable's inner conductor with negligible resistance is Ri, and the radius of the... more
Follows • 0
Expert Answers •1
Science Biology

03/02/24

'Pins and Needles'
How do you explain the science of the sensation ‘pins and needles’, after for example you experience paresthesia (numbness) in your arm or leg?
Follows • 1
Expert Answers •1
Science Math Chemistry

02/23/24

The activation energy Ea for a particular reaction is 42.2 kJ/mol. How much faster is the reaction at 343 K than at 321 K? (R = 8.314 J/mol • K)
Follows • 1
Expert Answers •1
Science Math Chemistry

02/23/24

The activation energy for a particular reaction is 102 kJ/mol. If the rate constant is 1.35 × 10⁻⁴ s⁻¹ at 302 K, what is the rate constant at 273 K?
Follows • 2
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.