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andrey2020 [161]
3 years ago
9

A circus performer is putting together an act that involves lying on a bed of nails without getting hurt. The tip of each nail h

as a radius of 1 mm and the performer has a mass of 65 kg. A typical human pain threshold for pressure on the skin is about 0.40.4MPa (1\text{MPa} = 10^61MPa=10 ​6 ​​ Pa). This is the minimum pressure that causes a sensation of pain. If the performer stepped on a single nail, what pressure would the nail exert on his foot?
Physics
1 answer:
GREYUIT [131]3 years ago
4 0

Answer:

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Explanation:

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A net force of 125 N accelerates a 25.0 kg mass. What is the resulting acceleration?
Neko [114]

Answer: a=5 m/s^2

Explanation:

The acceleration of an object can be calculated by using Newton's second law:

F=ma

where

F is the net force applied on the object

m is the mass of the object

a is its acceleration

In this problem, we have F=125 N and m=25.0 kg, so we can rearrange the equation to calculate the acceleration:

a=\frac{F}{m}=\frac{125 N}{25.0 kg}=5 m/s^2

5 0
4 years ago
Read 2 more answers
Calculate the work done by a 4.2 N force pushing a 450. g sandwich across a table 0.8 m wide.
gladu [14]

Answer:

3.36 Joules

Explanation:

Work done= Force × distance

F=4.2 N

distance= 0.8 m

work done= 4.2 × 0.8

work done= 3.36 Joules

3 0
3 years ago
Which one of the following is the general equation for a single-displacement reaction?
azamat

Answer: A. AB + C → AC + B

Explanation:

A single displacement reaction is also known as single replacement reaction. A reaction in which an element replaces another element from the compound is known as single displacement reaction.

AB + C → AC + B

Here, element C replaces another element B from compound AB.

Thus, option A represents is a general equation for a single displacement reaction

Option B represents a double displacement reaction where one element of a compound replaces another element of another compound and vice-versa, option C is a synthesis reaction where two reactants or more combine to form one product. Option D is a decomposition reaction in which multiple products are formed from a single reactant.

8 0
3 years ago
How do longitudinal waves transport energy?
marissa [1.9K]

A longitudinal wave transports energy through the medium without permanently transporting matter.


Hope this helps :D

6 0
3 years ago
A force of 50N is applied to the end of a lever to lift a rock that is 350N . what is the mechanical advantage of a lever?
Ostrovityanka [42]

Answer:

MA  = 7

Explanation:

Mechanical Advantage = Load/Effort

From the question,

Load  = 350N

Effort applied = 50N

Mechanical Advantage = 350N/50N

Mechanical Advantage = 7

Hence the mechanical advantage is 7

5 0
3 years ago
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