Answer:
Height, h = 16.67 m
Explanation:
We have,
Mass of a squirrel is 0.765 kg.
He jumps off the tree and hits the ground with 125 joules of energy.
It is required to find the height up on the tree the squirrel was when it jumped.
The energy possessed by the squirrel is called its gravitational potential energy. It can be given by :
h is height up on the tree the squirrel was when it jumped
So, the squirrel will go to a height of 16.67 m.
Answer:
Yes
Explanation:
The plank (also called a front hold, hover, or abdominal bridge) is an isometric core strength exercise that involves maintaining a position similar to a push-up for the maximum possible time
Answer:
Incomplete question
This is the completed question
If the resistor in the circuit had a larger resistance then the current would be then have to be proportionally smaller. Because the batteries each give off 1.5 volts then the current would have to be the variable that would change. What affect would using a 12V car battery have on the operation of your circuit? (Do not try this.) What would happen to the current? What would happen to the resistor?
Explanation:
Using ohms law as our basis
Ohms law state that, the voltage in an ohmic conductor is directly proportional to the current
V∝I
Resistance is the constant of proportionality
Then
V=iR
Since we want a relationship between current and resistance.
then, I=V/R
So, current is inversely proportional to Resistance
as the current increase the resistance reduce and as the current reduces the resistance increases.
a. So, increasing the voltage from 1.5V to 12V increases the current In the circuit because voltage Is directly proportional to I.
From ohms law
V=iR
When v =1.5V
I=1.5/R
When V increase to 12V
I=12/R
I.e, it increases by a factor of 8. Eight times it's initial value
b. Now, the resistance in the circuit is the constant of proportionality and it doesn't change in a given circuit expect when using a variable resistoa r like rheostat.
D. you develop positive interactions with your peers
Answer:
speed and acceleration of the turbine V = 80.24 m/s and a = 109.1 m/s²
Explanation:
The wind turbine describes a circular motion, with constant angular velocity, we can find the speed with the equation
V = x / t
Where x is the distance traveled which is the length of the circle (X = 2πr) and time is the time in a revolution, which in this case is called the period
t = 60/13
t = 4.62 s
x = 2 p1 59
x = 370.71 m
V = 370.1 / 4.62
V = 80.24 m / s
The centripetal acceleration is given by the equation
a = V² / r
a = 80.24²/59
a = 109.1 m / s²
The second part of the exercise seems totally independent
The dog r = 16cm with a speed of 2.5 m/s, ask us the centripetal force
F = m a
F = m (v² / r)
m = 10 mg (1g / 1000mg) 1 Kg / 1000 g) = 1 10⁻⁵ Kg
r = 16 cm (1m / 100cm) = 16 10⁻² m
F = 1 10⁻⁵ 2.5²/16 10⁻²
F = 3.91 10⁻² N
Let's calculate the relationship between the force and the weight of the drop
F / W = 3.91 10⁻² (1 10⁻⁵ 9.8)
F / W = 3.99 10
²
See that the force of the shake is approximately 400 times greater than the weight of the drop
