4,347 Answered Questions for the topic Science

10/28/20

Calculating spring constant experientially with the methods of compression and collision (the question on the experiment is bolded in the description)
In an experiment, the spring constant (k) was calculated by gathering data on force and displacement from a compression (Part 1) and a collision (Part 2). In both parts, the spring constant (k) was... more
Follows • 1
Expert Answers •1

10/28/20

What is a cell?
Follows • 2
Expert Answers •3

10/28/20

What is an atom?
A very small basic unit of a chemical element. It is a great source of nuclear energy.
Follows • 1
Expert Answers •6

10/28/20

Voting and Biodiversity

How does biodiversity affect voting
Follows • 1
Expert Answers •1
Science Math Physics

10/27/20

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

10/27/20

When a horse pulls a 79 kg buggy down the road with a force of 51 N, the buggy hitch makes an angle of 25 degrees above the horizontal.
When a horse pulls a 79 kg buggy down the road with a force of 51 N, the buggy hitch makes an angle of 25 degrees above the horizontal. If the force of friction on the buggy is 3 N, what is the... more
Follows • 1
Expert Answers •1
Science Math Physics

10/27/20

A bullet is shot from a height of 5 meters with a velocity of 230 m/s. How long before the bullet hits the ground? How far will it travel?

A bullet is shot from a height of 5 meters with a velocity of 230 m/s. How long before the bullet hits the ground? How far will it travel? 
Follows • 1
Expert Answers •2
Science Math Physics

10/27/20

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, how heavy can the balloon itself be before it will no longer float?
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
Science Math Physics

10/26/20

A 55.4 kilogram skydiver is falling toward the Earth at a constant speed. What is the approximate magnitude of the upward force of air resistance acting on the skydiver?
A 55.4 kilogram skydiver is falling toward the Earth at a constant speed. What is the approximate magnitude of the upward force of air resistance acting on the skydiver? No parachute.
Follows • 1
Expert Answers •1

10/26/20

Titration: Back Titration
33.7 mL of 1.54 M hydrochloric acid is added to 31.2 mL of sodium hydroxide, and the resulting solution is found to be acidic.16.4 mL of 1.19 M barium hydroxide is required to reach neutrality.What... more
Follows • 2
Expert Answers •1
Science Geology

10/24/20

What is this rock I found?
https://linksharing.samsungcloud.com/IJ2eH5tnBc5NThis is the link for the pictures
Follows • 1
Expert Answers •1

10/24/20

Can someone help me with the question?
A 5.82-kg object passes through the origin at time t = 0 such that its x component of velocity is 5.20 m/s and its y component of velocity is −3.12 m/s.(a) What is the kinetic energy of the object... more
Follows • 1
Expert Answers •1

10/24/20

How do I solve this question? Help me please?
the beam 13.0 cm farther into the ground before coming to rest. Using energy considerations, calculate the average force the beam exerts on the pile driver while the pile driver is brought to... more
Follows • 1
Expert Answers •1

10/24/20

How do I solve this?
A 0.200-kg particle has a speed of 1.90 m/s at point  and kinetic energy of 7.40 J at point .(a) What is its kinetic energy at ? ______ J(b) What is its speed at ? ______m/s(c) What is the net work... more
Follows • 1
Expert Answers •1

10/24/20

Can someone please help me with my Physics Question?
A woman fires a rifle with barrel length of 0.6600 m. Let (0, 0) be where the 75 g bullet begins to move, and the bullet travels in the +x-direction. The force exerted by the expanding gas on the... more
Follows • 1
Expert Answers •1

10/24/20

How do I solve this Physics question? Help Please!
Spiderman, whose mass is 78.0 kg, is dangling on the free end of a 11.8-m-long rope, the other end of which is fixed to a tree limb above. By repeatedly bending at the waist, he is able to get the... more
Follows • 1
Expert Answers •1

10/24/20

How do I solve this Physics question please?
A raindrop of mass 3.46  10-5 kg falls vertically at constant speed under the influence of gravity and air resistance. Model the drop as a particle.(a) As it falls 80 m, what is the work done on... more
Follows • 1
Expert Answers •1

10/24/20

The emission spectrum from atoms and molecules
a. Occurs only in the visible region of the electromagnetic spectrumb. Is a discrete spectrum that is unique to each atom or moleculec. Is a continuous spectrumd. Is a descrete spectrum that is the... more
Follows • 1
Expert Answers •1

10/24/20

The value of ni if the observed wavelength is 657 nm is
The value of ni if the observed wavelength is 657 nm isa. 4b. 2c. 5d. 3 I think the answer is b. 2, since 657 nm is part of the Balmer Series (to n=2)
Follows • 2
Expert Answers •1

10/23/20

Physics question
1. if during a 60 second jog, my average velocity is 5 m/s, how far from my starting point do i end up(what is my displacement ) in meters
Follows • 1
Expert Answers •1

10/23/20

Please help me thx u
Baking soda is a white powder used for baking or cleaning. When you mix baking soda, NaHCO3, with vinegar, C2H4O2, you get a clear colorless liquid and bubbles of CO2. Specify the phase of each of... more
Follows • 1
Expert Answers •1
Science Python

10/23/20

Neural network on categorization of animals using python
I want to know how young children categorize animals. What features (colour, amount of legs, etc) are they using to identify what the animal is. For example, if they were exposed to a white dog... more
Follows • 1
Expert Answers •1

10/22/20

Pharmacology Question About Treating Patients

Elderly patients specifically commonly have multiple comorbidities. What role does a broad understanding of pharmacology have in helping you care for the patients you will be treating?
Follows • 1
Expert Answers •2

10/22/20

calorimeter experiment
when learning about coffee-cup calorimetry, i have 3 questions regarding it that have been making me a bit confused.when using a coffee-cup calorimeter in an experiment, why is it important to... more
Follows • 2
Expert Answers •1

10/21/20

coffee-cup calorimeter
When doing an experiment using a coffee-cup calorimeter, NaOH, and Acetic Acid: If some heat was lost to or gained from the surroundings what would happen to the measured ΔT? How does this affect... more
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.