Answer:
f = 6.66 cm
Explanation:
For this exercise we will use the constructor equation
1 / f = 1 / p + 1 / q
where f is the focal length, p is the distance to the object and q is the distance to the image
the expression for magnification is
m = h '/ h = - q / p
with this we have a system of two equations with two unknowns, in the problem they give us the distance to the image q = 10 cm and a magnification of m = -0.5
-0.5 = - q / p
p = - q / 0.5
p = - 10 / 0.5
p = 20 cm
now we can with the other equation look for the focal length
1 / f = 1/20 + 1/10
1 / f = 0.15
f = 6.66 cm
According to Piaget, that means that she has made the transition from the <u>sensorimotor</u> to <u>preoperational </u>stage
<h3>What is
the sensorimotor stage?</h3>
The first of Piaget's four stages of cognitive development is the sensorimotor stage.
A child's understanding that the outside world exists apart from them is what distinguishes it.
Within Piaget's stages of development, the kid will advance to the following stage after they have completely grasped this.
"Charlene has just begun to be able to form a mental representation of an object that is not visibly present.
According to Piaget, that means that she has made the transition from the <u>sensorimotor</u> to <u>preoperational </u>stage
Only recently has Charlene been able to create a mental image of something that is not physically present.
That indicates that she has moved from the sensorimotor to the preoperational level, in accordance with Piaget.
The complete question is attached in the attachment.
To learn more about the sensorimotor stage refer;
brainly.com/question/14780906
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Answer:
v = 349.23 m/s
Explanation:
It is required to find the orbital speed for a satellite from the center of mass.
Mass of Mars,
The orbital speed for a satellite is given by the formula as follows :
So, the orbital speed for a satellite is 349.23 m/s.
The change in velocity is 2m/s
Given ,
mass of baseball m = 0.5kg
force on baseball F = 10 N
Duration .i.e. time t = 0.1s
To find here change in velocity =?
Solution,
The impulse(J) of an object is equal to,
J = F× T
Where J is the impulse of the baseball and F is force on baseball at time t.
The impulse is equal to the change in momentum of the baseball and its unit is (N.s) Newton -second. it is a vector quantity therefore the dimension is [LMT⁻¹]. Then the impulse j is given as ,
J = m(v-u)
Here J is impulse ,m is mass, (v-u) is change in velocity .From equating the both impulse equations then can be write as,
m(v-u) = F× t
(v -u) =( F × t)/m
(v -u) = (10N× 0.1 s)/0.5k
(v -u) = 2m/s
Hence the change in velocity (v -u) of baseball is 2m/s.
- A 0.5kg baseball experiences a 10n force for a duration of 0.1s. what is the change in velocity of the baseball ?
To know more about impulse
brainly.com/question/26739863
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