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4 years ago

Anyone get this if you do please help me step by step

Physics

1 answer:

kotegsom [21]4 years ago

5 0

Answer:

$7.95

Explanation:

$5.75 cost per bag ÷ 47 apples = unit cost of $0.1223. thus, each apple cost $ .1223.

.1223 × 65 apples= $7.95

note_rounding apples to .12*65=$7.8

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What is horoscope? what is its uses

Lemur [1.5K]

What is horoscope?
A forecast of a person's future, typically including delineation of character and circumstances, based on the relative positions of the stars and planets at the time of that person's birth.

*A short forecast for people born under a particular sign, especially as published in a newspaper or magazine.

*A birth chart.

What is its uses?
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8 0

4 years ago

Read 2 more answers

Release an electron initially at rest in the presence of an electric field. The electron tends to go to the region of 1. same el

olga nikolaevna [1]

Answer:

The electron tends to go to the region of 4. higher electric potential.

Explanation:

When a charged particle is immersed in an electric field, it experiences a force given by

$F=qE$

where

q is the charge of the particle

E is the electric field

The direction of the force depends on the sign of the charge. In particular:

- The force and the electric field have the same direction if the charge is positive

- The force and the electric field have opposite directions if the charge is negative

Therefore, an electron (negative charge) moves in the direction opposite to the electric field lines.

However, electric field lines go from points at higher potential to points at lower potential: so, electrons move from regions at lower potential to regions of higher potential.

Therefore, the correct answer is

The electron tends to go to the region of 4. higher electric potential.

4 0

4 years ago

A 15-kg bicycle carrying a 50-kg boy is traveling at a speed of 5 m/s. What is the KE of the bicycle and the boy?

vovangra [49]

Together as one moving package, their mass is (15 + 50) = 65 kg.

   Kinetic energy = (1/2) (mass) (speed)²

   = (1/2) (65 kg) (5 m/s)²

   = (32.5 kg) (25 m²/s²)

   =    812.5 kg-m²/s² = 812.5 joules .

4 0

4 years ago

A man hits a ball and provides it with an initial velocity of 5.0 m/s on a rough horizontal surface. Due to the surface the ball

Alex777 [14]

Answer:

a) After 5.19 seconds dog catch the ball.

b) From the dog's initial position at 20.20 m dog catches the ball.

c) Speed of the ball when dog catches ball = 2.405 m/s

Speed of the dog when dog catches ball = 7.785 m/s

Explanation:

a) Let the time of catching be t.

We have equation of motion s = ut + 0.5 at²

Consider the motion of ball

Initial velocity, u = 5 m/s

Acceleration, a = -0.5 m/s²

Time, t = t

Substituting

s = 5 x t + 0.5 x -0.5 x t²

s = 5t - 0.25t²

Consider the motion of dog

Initial velocity, u = 0 m/s

Acceleration, a = 1.5 m/s²

Time, t = t

Substituting

s + 1 = 0 x t + 0.5 x 1.5 x t²

s = 0.75t²

If they catch up displacement of dog is 1 m more than displacement of ball.

That is

5t - 0.25t² + 1 = 0.75t²

t² - 5t -1 = 0

t = 5.19 or t = -0.19(not possible)

So after 5.19 seconds dog catch the ball.

b) Displacement of dog, s = 0.75t²

s = 0.75 x 5.19²

s = 20.20 m

From the dog's initial position at 20.20 m dog catches the ball.

c) We have equation of motion v = u + at

Consider the motion of ball

Initial velocity, u = 5 m/s

Acceleration, a = -0.5 m/s²

Time, t = 5.19 s

Substituting

v = 5 + -0.5 x 5.19 = 2.405 m/s

Speed of the ball when dog catches = 2.405 m/s

Consider the motion of dog

Initial velocity, u = 0 m/s

Acceleration, a = 1.5 m/s²

Time, t = 5.19 s

Substituting

v = 0 + 1.5 x 5.19 = 7.785 m/s

Speed of the dog when dog catches ball = 7.785 m/s

3 0

3 years ago

An absent-minded Penn State professor drives from State College to Tyrone, 20 miles away, at 60 mph (miles per hour), before rea

BaLLatris [955]

Answer:20 mph

Explanation:

Given

distance between college to Tyrone=20 miles

Given professor drives with a velocity of 60 mph

he returns to college after reaching tyrone and then again drive to tyrone.

so his net displacement is 20 miles

time taken to cover 20 miles is $\frac{1}{3}$ hr

average velocity $=\frac{Displacement}{Time\ taken}$

$V_{avg}=\frac{20}{\frac{1}{3}+\frac{1}{3}+\frac{1}{3}}$

$V_{avg}=\frac{20}{1}=20 mph$

8 0

4 years ago