1,308 Answered Questions for the topic physical science

Physical Science

02/18/20

Momentum & Energy

Ccalculate the force change in potential energy of 80 kg of water falling 50m over Niagara Falls. 2. Car crashes in a wall at 25.0 m/s and its contents are brought to rest in 0.100s. What is the... more
Follows • 1
Expert Answers •1
Physical Science Science

02/14/20

Physical Science Questions
A thick wire will have ____ resistance than a thin wire of the same material.(A) open(B) marginal(C) greater(D) less (E) none of the above 2. The thin wire in the previous question will... more
Follows • 1
Expert Answers •2
Physical Science Science Chemistry

02/13/20

About experimental execution: You are doing a taste test experiment on your classmates for their ability to taste

or not to taste a particular water-soluble, colorless chemical. You set out 30 identical cups, and pour the test solution into each one, half-filling the cup. The class time comes, and you are... more
Follows • 1
Expert Answers •1
Physical Science

02/13/20

The human forelimb and the whale forelimb are _homologous_ structures.
Follows • 1
Expert Answers •1
Physical Science

02/05/20

Contrast the energy transformations that occur in an electric toaster oven and in an electric fan
Follows • 1
Expert Answers •1
Physical Science

02/05/20

Calculate the quantity of heat needed to heat 8.0 grams of water from 42.0 OC to 45.0 OC.
Follows • 2
Expert Answers •1
Physical Science

02/03/20

Force Vector / acceleration

A block is pulled at 20° by a 45N. Solve for the magnitude of the force, F and the mass of the block if all forces are in equilibrium. 2. The block is pulled at 25° by 30N forces left and right, ... more
Follows • 1
Expert Answers •1
Physical Science

01/31/20

how does water affect seed germination
Follows • 1
Expert Answers •1
Physical Science Honors

01/30/20

At 189 C, a sample of a gas has a volume of 32.0 mL. What volume does the gas occupy at 242 C?
Follows • 2
Expert Answers •1
Physical Science

01/28/20

Constant velocity/acceleration

A car accelerates from the rest until it is traveling at 88km/hr for 6.2seconds. The time to keep up to speed is 6.2 seconds. What is the acceleration of the car in m/s2? How far did the car travel... more
Follows • 2
Expert Answers •1
Physical Science

01/28/20

Constant velocity and acceleration

A family road trip starts out in a van traveling 50km at a velocity of 75km/hr followed by a spot of a slow traffic where they travel 10km at a velocity of 25km/hr. What is the average velocity... more
Follows • 1
Expert Answers •2
Physical Science

01/24/20

Calculate the decrease in temperature 6.00L at 20.0 degrees Celsius is compressed to 4.00 L
Follows • 2
Expert Answers •1
Physical Science

01/23/20

Constant velocity

A rock is dropped from rest and free falls at 10m/s2. How fast will the rock be moving right before it hit the ground it falls 3.3m? How long does it take for the rock to fall 3.3m.
Follows • 1
Expert Answers •1
Physical Science

01/11/20

What will the stopping distance be for a 3000-kg care if -3000 N of force are applied when the car is traveling 10m/s
I need to know how to solve the above problem?
Follows • 1
Expert Answers •1
Physical Science

01/06/20

Question of Physical Chemistry

The mobility of a divalent cation in water is 8*10-8 m2v-1s-1. The effective radius of the ion is ( viscosity of water = 1cP; e=1.6*10-19C) 106pm 212pm 424pm 318pm
Follows • 1
Expert Answers •1
Physical Science

12/10/19

Catalyst are used to make a chemical reaction to do what
Follows • 1
Expert Answers •1
Physical Science

12/06/19

Compare and contrast a dilute solution of a strong acid and a concentrated solution of a weak acid
Follows • 1
Expert Answers •1
Physical Science

12/03/19

. An ocean wave has a wavelength of 10 m and a frequency of 4.0 Hz. What is the velocity of the wave? Show the appropriate equation from your book and frequency of 4.0
Follows • 1
Expert Answers •1
Physical Science

11/23/19

suppose a sample of radioactive substance weighs 34 mg. One year later, the sample weighs 23.5 mg. what is half-life of this substance? round your answer to two decimal places.
Follows • 1
Expert Answers •1
Physical Science

11/19/19

What is the relationship between the magnetic force and distance?
Magnetic Force Strength (N) {Y-axis} Distance between two magnets (mm) {X-axis} 19 1 17 1.5 14 2 11                   Predict this value 9 4 7 6 4 10 2                  Predict... more
Follows • 1
Expert Answers •1
Physical Science

11/18/19

How much energy did truck one lose in the collision
Follows • 2
Expert Answers •1
Physical Science

11/18/19

What conversion factor is needed to change from kilometers to meters?
A) 0.01B) 100C) 0.001D) 1000
Follows • 0
Expert Answers •1
Physical Science

11/15/19

Name 10 elements you have access to as an everyday consumer.
Follows • 1
Expert Answers •1
Physical Science

11/15/19

Strontium is very dangerous to humans because it can accumulate in bone tissues. How can you relate this fact to the organization of the Periodic Table?
Follows • 1
Expert Answers •1
Physical Science

11/15/19

Of the atoms of sodium, magnesium and aluminum, one tends to lose 3 electrons, another 2 electrons and the third, loses one. Rank the elements in order of which lowest the fewest to greatest.
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.