Answer:
chemical potential energy
Explanation:
A 9v battery comes in different formats, such that the most common one is the carbon-zinc and alkaline chemistry, so these are alkaline batteries (there are also rechargeable or lithium batteries, these also depend on chemical interactions).
These batteries "draw" the energy from chemical interactions of the materials inside of it, so the type of potential energy that is stored in a battery is actually chemical (regardless of the fact that the energy can be transformed into electrical energy later) the "potential" refers to how the energy is stored.
Then the correct option is chemical potential energy
Thermal energy is converted to chemical energy.
Answer:
The acceleration of the car at the instant when t=3s is found by taking the gradient of the tangent at the point t=3.
The tangent are those dotted lines sloping upwards in the graph.
Tangent: A straight line that touches the curve and does not intersect it.
The reason why they wrote instantaneous is because the acceleration (or gradient of graph) is not constant throughout hence it is just at the moment when t=3s.
Gradient is used to find the acceleration of a speed time graph.
From the statement, since rocket was launched so this means
that it start from zero, hence initial velocity is zero. <span>
Since the rocket was launched vertically straight up, the
force acting on this motion is gravity.</span>
<span>
<span>A. The acceleration of the motion is then given
by:</span>
a= F/m - g
<span>Then we can use the general equation:
V^2 = Vo^2 + 2*a*h</span></span>
where V is final velocity, Vo is initial velocity, a is acceleration,
h is height <span>
Since we know that Vo = 0, so
V^2 = 2*a*h </span>
V^2 = 2 (F/m – g) h<span>
V = sqrt [2 h (F/m – g)]</span>
B. Given that:
h = 86 m
F = 10 N
m = 340 g = 0.34 kg
Find for V:
V = sqrt [2 * 86 (10 / 0.34 – 9.8)]
<span>V = 58.08 m/s</span>