10/10/20

Problem #4: Imagine you are standing on the edge of a cliff, holding two golf balls. You drop one ball straight off the cliff.
You throw the second ball at the same time with an initial horizontal velocity (no viy). Which ball will hit the ground first? Draw a model and explain why using your knowledge about freefall... more
Follows • 1
Expert Answers •1

10/08/20

if the diagonals of a parallelogram are congruent, what can you conclude about the parallelogram?
Follows • 2
Expert Answers •1

10/07/20

For a submarine to stay submerged, it must be neutrally buoyant, which means it is maintaining a careful balance between its weight and the buoyant force of water pushing it toward the surface.

So it says that the enclosed volume was 977.606 m^3 and that we need to assume the density of the water is 1000 kg/m^3. What I did was977.606 *1000=977606and then I multiplied it times the assumed... more
Follows • 1
Expert Answers •1

10/01/20

physics question
Which of the following is a rewriting of Newton's 2nd Law in terms of momentum?A. Fnet = [(∆p)/(∆m)]B. Fnet = m[(∆p)/(∆t)]C. Fnet = pvD. Fnet = [(∆p)/(∆t)]
Follows • 1
Expert Answers •1

10/01/20

physics question
Which of the following is the definition of power?A. The percentage of actual work done compared to the energy put into the systemB. The rate at which energy is expended or transformed over... more
Follows • 1
Expert Answers •1

10/01/20

Newton's 1st Law Problems
How does wearing a seat belt in a car relate to Newton’s first law? How does the Voyager 1 spacecraft follow Newton’s first law? How does the “tablecloth trick” exhibit Newton’s first law?
Follows • 1
Expert Answers •1

09/24/20

A light plane must reach a speed of 46 m/s for takeoff.

A light plane must reach a speed of 46 m/s for takeoff. How long of a runway is needed if the (constant) acceleration is 3.2 m/s2 (units)
Follows • 1
Expert Answers •1

09/24/20

PHYSICS kinematic Equations

An ice skater starts their routine at rest. At the end of their routine, the ice skater has a velocity of 3 m/s. What was the ice skater’s average velocity during their routine? Starting at rest,... more
Follows • 1
Expert Answers •1

09/23/20

Thermal Physics Specific Heat Capacity and Specific Latent Heat Question (in description)
Please could someone check my answers to questions I have been doing for revision purposes? I do not have a mark scheme. Thank you!Ice of mass 22g at temperature -12C is taken from a freezer and... more
Follows • 2
Expert Answers •2

09/22/20

What are the components of a vector with a magnitude of 4.00 and a direction of -112 degrees?
What are the components of a vector with a magnitude of 4.00 and a direction of -112 degrees? A. (1.50, 3.71) B. (-1.50, -3.71) C. (-3.71, -1.50) D. (-1.12, -1.78)
Follows • 1
Expert Answers •1

09/17/20

Factor x^2+5x+6
Follows • 1
Expert Answers •1

09/17/20

Faith rides her bicycle with an initial velocity of 6.0 m/s for 20 seconds. She then begins to speed up with an acceleration of 0.20 m/s2 for 10 seconds. How far...
Faith rides her bicycle with an initial velocity of 6.0 m/s for 20 seconds. She then begins to speed up with an acceleration of 0.20 m/s2 for 10 seconds. How far does Faith travel during the... more
Follows • 2
Expert Answers •1

09/16/20

Kinematics: Physics
A sperm whale can accelerate at about 0.140 m/s^2 when swimming on the surface of the ocean. How far will it travel if it starts at a speed of 1.20 m/s and accelerates to a speed of 2.5 m/s? Assume... more
Follows • 2
Expert Answers •2

09/16/20

Robin pushes a wheelbarrow by exerting a 178.5N force horizontally. Robin moves it 68.8m at a constant speed for 29.9s. If Robin moves the wheelbarrow 3.5 times as fast, how much power is developed?
Robin pushes a wheelbarrow by exerting a 178.5N force horizontally. Robin moves it 68.8m at a constant speed for 29.9s. If Robin moves the wheelbarrow 3.5 times as fast, how much power is developed?
Follows • 1
Expert Answers •1

09/14/20

Robbie is playing baseball with his friends. He hits a pop fly that travels straight up in the air. The ball reaches a maximum height of 14.7 meters before falling back down...
Robbie is playing baseball with his friends. He hits a pop fly that travels straight up in the air. The ball reaches a maximum height of 14.7 meters before falling back down toward the ground. How... more
Follows • 2
Expert Answers •2

09/13/20

multiple choice physics question
Which of the following is true about Newton's Universal Law of Gravity? A. It's essential to set m1 equal to the mass of the lighter object and m2 equal to the mass of the heavier object. B. If the... more
Follows • 1
Expert Answers •2

09/11/20

Small rockets are used to make small adjustments in the speed of satellites. One such rocket has a thrust of 14 N. If it is fired to change the velocity of a 304.7 kg space craft by 34.2 cm/s,

Velocity ChangeSmall rockets are used to make small adjustments in the speed of satellites. One such rocket has a thrust of 14 N. If it is fired to change the velocity of a 304.7 kg space craft by... more
Follows • 1
Expert Answers •1

08/30/20

I need help solving a word problem. If you can, can you explain how the answer was achieved?
A concession stand sells hotdogs and hamburgers. A hamburger cost 75 cents morethan a hotdog. In one afternoon the stand sells 40 hotdogs and 50 hamburgers and collects$226.50. Find the price of a... more
Follows • 1
Expert Answers •2

08/29/20

A Thermocouple is used to measure high temprature provided the tempratures measured

Thermocouples are used to measure high temperatures provided the temperatures measured a. do not exceed the melting points of the wires in the thermocouple b. are equal to the melting... more
Follows • 1
Expert Answers •1

08/28/20

Patrick drives his car at 120 km/h for 5 hours. How far did he go?
Follows • 1
Expert Answers •1

08/25/20

When you view the pendulum’s swing, it shows that at the very top of the swing KE = 0. What does that tell you about the pendulum’s motion at that point?

Follows • 2
Expert Answers •2

08/08/20

Distance Question
the angle of elevation is 68 degrees. The string on the kite is 50m long. How far above the ground is the kite?
Follows • 1
Expert Answers •1

08/08/20

Optical question
A human with bad vision is reading a book which is 14 cm from the eyes. He needs glasses with what optical power if recomennded reading distance for healthy humans is 25 cm.
Follows • 1
Expert Answers •2

07/31/20

Standard deviation

Find the mean and standard deviation for the set of data{16,22,8,5,20,18,14,17,24}A. Mean: 16; standard deviation: 5.87B. Mean: 16; standard deviation: 5.95C. Mean: 17; standard deviation: 5.87D.... more
Follows • 1
Expert Answers •1

07/31/20

How to find efficiency of a motor
2. An electric motor operates a pump that irrigates a farmer’s crop by pumping 1.0×104L of water a vertical distance of 8.0 m into a field each hour. The motor has an operating resistance of 22.0... more
Follows • 1
Expert Answers •2

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.