1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kap26 [50]
3 years ago
5

A lawn roller is rolled across a lawn by a force of 107 N along the direction of the handle, which is 13.5 ◦ above the horizonta

l. If the lawn roller develops 69.4 W of power for 33 s, what distance is the roller pushed? Answer in units of m.
Physics
1 answer:
-BARSIC- [3]3 years ago
6 0

Answer:

22.02 m

Explanation:

given,

Force, F = 107 N

angle made with horizontal = 13.5◦

Power develop by the lawn roller = 69.4 W

time = 33 s

distance = ?

Force along horizontal= F cos θ

          = 107 cos 13.5°= 104 N

Power = \dfrac{work\ done}{time}

69.4 = \dfrac{W}{33}

W = 2290.2 J

Work done= Force x displacement

displacement= \dfrac{2290.2}{104}

                      = 22.02 m

You might be interested in
The distance between a speaker and a listener is 8.0 m. Determine the frequency of the sound wave if exactly 20 waves are formed
dmitriy555 [2]

The frequency of the wave is 6800 Hz

<u>Explanation:</u>

Given:

Wave number, n = 20

Speed of light, v = 340 m/s

Frequency, f = ?

we know:

wave number = \frac{frequency}{speed of light}

20 = \frac{f}{340 m/s} \\\\f = 20 X 340 s^-^1\\\\f = 6800 Hz

Therefore, the frequency of the wave is 6800 Hz

4 0
3 years ago
You are doing an experiment to determine your reaction time. Your friend holds a ruler. You place your fingers near the sides of
olga2289 [7]
I'm guessing that you mean like this:
-- The ruler is held with zero at the bottom, and the centimeter markings
    increase as you go up the ruler.
-- You place your fingers with the ruler and the zero mark between them.
-- The number where you catch the ruler is the distance it has fallen.

Then, all we have to find is the time it takes for the ruler to fall 11.3 cm .

Here's the formula for the distance an object falls from rest
in a certain time:

                Distance = (1/2) (gravity) (time)²

On Earth, the acceleration of gravity is 9.8 m/s².
So we can write ...

                              11.2 cm  =  (1/2) (9.8 m/s²) (time)²
or
                         0.112 meter  =  (4.9 m/s²) (time)²                      

Divide each side
by  4.9 m/s² :        (0.112 m) / (4.9 m/s²)  =  time²

                            (0.112 / 4.9)  sec²  =  time²

Square root
each side:            time = √(0.112/4.9  sec²)

                                  =  √ 0.5488 sec²

                                  =      0.74 second     (rounded)  

4 0
3 years ago
Read 2 more answers
You have a 1.7 μf and a 2.2 μf capacitor. what values of capacitance could you get by connecting them in parallel?
Rus_ich [418]
You have to add 1.7 and 2.2 together!
1.7+2.2=3.9μF
5 0
3 years ago
Read 2 more answers
How to find the velocity using a graph
HACTEHA [7]
The slope of the line on a velocityversus time graph is equal to the acceleration of the object. If the object is moving with an acceleration of +4 m/s/s (i.e., changing its velocity by 4 m/s per second), then the slope of the line will be +4 m/s/s.
4 0
3 years ago
In 10 seconds a car accelerates 4m/s^2 to 50
DanielleElmas [232]

Answer:

10m/s

Explanation:

using the formula a=v-u

t

4 0
2 years ago
Other questions:
  • A transformer changes the 10,000 v power line to 120 v. if the primary coil contains 750 turns, how many turns are on the second
    14·1 answer
  • Jerome plays middle linebacker for South's varsity football team. In a game against cross-town rival North, he delivered a hit t
    14·1 answer
  • A dipole of moment 0.5 e·nm is placed in a uniform electric field with a magnitude of 8 times 104 N/C. What is the magnitude of
    11·1 answer
  • Which of the following has the greatest kinetic energy? A. a mass of 4m at velocity v. B. a mass of 3m at velocity 2v. C. a mass
    13·1 answer
  • A ball is thrown vertically upward (assumed to be the positive direction) with a speed of 24.0 m/s from a height of 3.0 m. (a) H
    14·1 answer
  • Two identical blocks are connected to opposite ends of a compressed spring. the blocks initially slide together on a frictionles
    5·1 answer
  • The billiard ball model was the working model of the atom until thomson discovered the
    15·2 answers
  • 4) A drag racer starts her car from rest and accelerates at 10.0 m/s² for a distance of 400 m (1/4 mile). (a) How long did it ta
    13·1 answer
  • Can someone help me on boding elements? please im struggling. look at the picture and also if you answer can you have a picture
    5·1 answer
  • #1 explain why there is no such thing as a quick and easy way to lose weight.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!