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Physics

Beckett Robles

The minimum breaking distance d in feet for a typical vehicle can be modeled with the equation d (v) = 0.045v2, where v is the vehicle's speed in miles per hour. The minimum braking distance for a vehicle with new tires at optimal inflation is d (v) = 0.039v2. What kind of transformation describes this change from d (v) = 0.045v2 to d (v) = 0.039v2, and what does this transformation mean?

a. Horizontal compression by a factor of 13/15; the braking distance will be more with optimally inflated new tires than with tires having more wear.

b. Horizontal compression by a factor of 13/15; the brakin

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Physics

Makena Hendrix

A 2kg blob of putty moving at 4 m/s slams into a 6kg blob of putty at rest what is the speed of the to stick together blobs immediately after colliding

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Physics

Jamar George

A stone is thrown vertically upward with a speed of 12m/s from the edge of a cliff 70 m high (a) How much later it reaches the bottom of the cliff? (b) What is its speed just before hitting? And (c) what total distance did it travel? (Ans: 5.2 sec, 38.94 m/s, 84.7 m)

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Physics

Jakobe Wells

After completing a career search, Patrick has decided that he wants to be a paralegal. Which two skills or abilities are important for him to have in order to excel in this career? A research skills B analytical thinking skills C creative thinking skills D math skills

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Physics

Duncan Hendrix

The highest peak in the vicinity (<100 kilometers) of Mt. Kilimanjaro is located to the:

a. north.

b. west

c. east.

d. south.

e. northeast

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Physics

Keegan

Which of the following lists contains only examples of renewable sources of energy?

A. wind, tidal, geothermal, and hydroelectric

B. coal, solar, wind, and biomass

C. fossil fuels and nuclear energy

D. hydroelectric, petroleum, solar, and wind

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Physics

Guest

The part of a longitudinal wave that is least dense is called a (n)

rarefaction

refraction

contraction

compression

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Physics

Davian Barron

if 100 grams is equal to 1 newton of force, and the water displaced by an object would have a mass of 40 grams, what is its buoyant force on that object?

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Physics

Nolan Leach

A charge if 2 nC is placed 10cm to the right of a conducting sphere with a diameter of 2 cm. A charge of 5 nC is placed 10 nC to the left of the same sphere. determine the charge at the center of the sphere.

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Physics

Salma Jacobson

1) How is chemical energy

transformed into potential

energy?

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Physics

Guest

A double-paned window has two glass panes separated by a layer of air. Why

is air, rather than glass, used to fill this space?

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Physics

Ruffles

To determine waves frequency you must know the what

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Physics

Noemi Hutchinson

What is the average speed in miles per hour of the car that traveled a total of 200 miles in 5.5 hours

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Physics

Guest

A solid weighs 277.5 g in air and 212.5 g when totally immersed in the liquid of density 0.9 g / cc. Calculate the density of the solid.

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Physics

Hudson Rangel

Who first described the double-helix structure of DNA?

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