Answer:
cm
Explanation:
= height of the object = 2 cm
= height of the image
= distance of the object from the mirror = 30 cm
= focal length of the mirror = 25 cm
= image distance
using the mirror equation
cm
using the equation
cm
<h2>
Hello!</h2>
The answer is:
The first option, the force tending to lift Rover is equal to 14.5 N.
<h2>
Why?</h2>
To calculate the force that is tending to lift Rover vertically, we need to calculate the vertical component force.
Since we know that the angle between the force and the ground is 29°, we can calculate the vertical component of the force using the following formula:
We are given that the force is equal to 30.0 N, so, calculating we have:
Also, we can calculate the horizontal component of the force using the following formula:
Hence, we have that the correct option is the first option, the force tending to lift Rover is equal to 14.5 N.
Have a nice day!
Answer:
Grams of water can be heated from 20.0°C to 75°C using 12500.0 Joules = 54.3 g
Explanation:
Heat required to increase temperature
H = mcΔT
m = mass of material
C = specific heat of material
ΔT = Change in temperature.
Here we need to find how many grams of water can be heated from 20.0°C to 75°C using 12500.0 Joules
That is
H = 12500 J
Specific heat of water, C = 4186 J/kg°C
ΔT = 75 - 20 = 55
Substituting
12500 = m x 4186 x 55
m = 0.0543 kg
m = 54.3 g
Grams of water can be heated from 20.0°C to 75°C using 12500.0 Joules = 54.3 g
Change in velocity of larger moose: (1/3)v - v = -(2/3)v
<span>change in velocity of small moose: (1/3)v - (-v) = (4/3)v </span>
<span>- (change in velocity of larger moose)/(change in velocity of smaller moose) = 2
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Answer:
The acceleration of the elephant is 5m/s^2 (squared).
Explanation:
Given: Force=200N, Mass=1000kg
Required: acceleration=?
Equation: a=F/m
Solution: a=200N/1000kg
Answer: a=5m/s^2
