If The dimensions of a brick that weighs 25N are 0.19m x 0.07m x 0.095m. What pressure does the brick exert on the ground if it
1 answer:
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P=25x10^6 andF=750.So plug in everything to solve for A. which is 3x10^-5m^2 OR 0.3mm^2
Answer:
The distance and height of the object is 6 m and 2 m.
The image is virtual and upright.
Explanation:
Given that,
Focal length = 0.25 m
Length of image = 0.080 m
Image distance = 0.24 m
We need to calculate the distance of the object
Using formula of lens
Put the value into the formula
We need to calculate the magnification
Using formula of magnification
Put the value into the formula
We need to calculate the height of the object
Using formula of magnification
A convex mirror produce a virtual and upright image behind the mirror.
Hence, The distance and height of the object is 6 m and 2 m.
The image is virtual and upright.
Answer:
Tension in the string at this position: 3.1 N.
Explanation:
Convert the radius of the circle to meters:
.
What's the net force on the object?
The object is in a circular motion. As a result,
,
where
is the net force on the object,
is the mass of the object,
is the velocity of the object, and
is the radius of the circular motion.
For this object,
.
The output unit of net force should be standard if the unit for mass, velocity, and radius are all standard. The net force shall always point towards the center. In this case the net force points downwards.
What are the forces on this object?
There are two forces on the object at this moment:
- Weight,
, which points downwards.
.
- Tension,
, which also points downwards. The size of the tension force needs to be found.
What's the size of the tension force?
Gravity and tension points in the same direction. The size of their resultant force is the sum of the two forces. In other words,
.
.
All three values in this question are given with two sig. fig. Round the value of to the same number of significant figures.