Answer:
<h2>12.5 N</h2>
Explanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 5 × 2.5
We have the final answer as
<h3>12.5 N</h3>
Hope this helps you
Answer: Explanation:
Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.
Explanation:
Given:
t = 20 seconds
x = 3000 m
y = 450 m
a) To find the vertical component of the initial velocity
, we can use the equation

Solving for
,



b) We can solve for the horizontal component of the velocity
as

or

Answer:
The power dissipated is reduced by a factor of 2
Explanation:
The power dissipated by a resistor is given by:

where
I is the current
R is the resistance
by using Ohm's law,
, we can rewrite the previous equation in terms of the voltage applied across the resistor (V):

In this problem, the resistance of the element is doubled, while the voltage is kept constant. So we have
while V remains the same; substituting into the formula, we have:

so, the power dissipated is reduced by a factor 2.
Answer:
19.5 mJ
Explanation:
Assuming perfect components without resistance or losses, the circuit should oscillate indefinetly.
The circuit will have a natural pulsation of



So, by the time t = 2.4 ms, 333.33 cycles would have passed

Therefore it would be at one third after the beginning of the cycle. The circuit would be in an equivalent state as t = (7.2 us)/3 = 2.4us
At t=0 the capacitor is fully charged, so the voltage is maximum and the current is 0. The current will increase towards a maximum of 800 mA at t=T/4, then decreas to 0 at t=T/2, decrease to -800 mA at 3T/4 and go back to 0 at t=T following a sine wave.
The equation of this sine wave would be


Since w = 2π/T
w * T = 2π

The current stored in an inductor is

