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
ratelena [41]
3 years ago
15

The fire alarm goes off, and a 75 kg firefighter slides down a pole with a constant acceleration of a = 6 m/s square. What is th

e upward force F exerted by the pole on the firefighter? *
Physics
1 answer:
Alex17521 [72]3 years ago
3 0

Answer:

450N

Explanation:

Given data

Mass m= 75kg

Acceleration= 6m/s^2

From the Newtons first law, F=ma

substitute

F=75*6

F= 450N

Hence the force is 450N

You might be interested in
Question 30
stellarik [79]

Answer: 0.69\°

Explanation:

The angular diameter \delta of a spherical object is given by the following formula:

\delta=2 sin^{-1}(\frac{d}{2D})

Where:

d=16 m is the actual diameter

D=1338 m is the distance to the spherical object

Hence:

\delta=2 sin^{-1}(\frac{16 m}{2(1338 m)})

\delta=0.685\° \approx 0.69\° This is the angular diameter

3 0
3 years ago
You have 13.0 gallons of gasoline. How many liters is this? (1 gallon equals<br> about 3.79 L.)
Harlamova29_29 [7]

Answer:

I believe the answer is C

Explanation:

8 0
3 years ago
Read 2 more answers
Who invented the wedge simple machine and why?
Lelu [443]

Answer:

Gene Sarazen began to win tournaments in 1935 with a new club he had invented that was specialized for sand play. He is hailed as the inventor of the sand wedge.

Explanation:

A wedge is a triangular shaped tool, and is a portable inclined plane, and one of the six classical simple machines. It can be used to separate two objects or portions of an object, lift up an object, or hold an object in place. It functions by converting a force applied to its blunt end into forces perpendicular (normal) to its inclined surfaces. The mechanical advantage of a wedge is given by the ratio of the length of its slope to its width.[1][2] Although a short wedge with a wide angle may do a job faster, it requires more force than a long wedge with a narrow angle.

The force is applied on a flat, broad surface. This energy is transported to the pointy, sharp end of the wedge, hence the force is transported.

The wedge simply transports energy and collects it to the pointy end, consequently breaking the item. In this way, much pressure is put on a thin area.

3 0
3 years ago
Which method do acoustic use to limit reverberations in music halls
dalvyx [7]

Answer:

reverberation time appropriate to the use and size of the room, adequate balance between direct and reverberant sound, intimacy and good sound diffusion in the room to obtain a uniform sound.

Explanation:The process of ... second method measured the speed of sound propagation by the phase shift.

8 0
3 years ago
Principal of simple machine?​
sergij07 [2.7K]

Answer:

if there is no friction in a simple machine, work output and work input are found equal in that machine

Explanation:

3 0
3 years ago
Other questions:
  • Is the movement of wind kinetic energy ?
    12·1 answer
  • NEED ASAP PLEASE !!
    5·2 answers
  • La resistencia total de un circuito en paralelo se calcula con la expresión: 1/ Rt = 1/ R1 + 1 / R2 + … + 1 / Rn
    11·1 answer
  • ________is what causes acceleration. Two forces acting opposite each other.
    13·1 answer
  • Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 4 MPa, 500°C, and 80 m/s and the exit c
    11·1 answer
  • What is the final velocity of a 10 kg object that drops from rest and falls for 30 seconds?
    13·1 answer
  • Which type of galaxy has the most active star formation?
    5·2 answers
  • Please helpp!!!!!!!!!!!!!!!!!!!!!!
    14·1 answer
  • Mr. Wang works in a recycling center. Recyclable materials arrive at the
    7·1 answer
  • It takes a bus driver 30 minutes to pick up students from four stops. The last stop is at the corner of Green Street and Route 7
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!