The correct answer is
<span> 4. protons are positively charged.
In fact, the direction of the electric field of a charged particle depends on the sign of the charge of the particle. While a negatively charged particle (such as the electron) produces an electric field that points toward the charge, a positively charged particle (like a proton) produces an electric field that points away from the charge. This can be proofed by using a positive test charge: if we put a positive test charge near a proton, this test charge will move away from the proton (because it is repelled from it, since they have same charge), and the direction of its motion gives the direction of the electric field generated by the proton, so away from it.</span>
Something that is definitely true is that the constant acceleration has to affect the monkey and the banana beacuse both are affected by the gravity. Gravity imparts exactly the same acceleration on both things while falling and it affects them in the same way
Answer: 1.2 seconds
Explanation:
Initial velocity =u=13.9m/s
Acceleration due to gravity=g=9.8m/s^2
Φ=25°
Time=t
T=(2 x u x sinΦ) ➗ g
T=(2 x 13.9 x sin25) ➗ 9.8
T=(2 x 13.9 x 0.4226) ➗ 9.8
T=11.75 ➗ 9.8
T=1.2 seconds
Answer:
d = 19.92 m
Explanation:
As in this exercise there is friction we must use the relationship between work and energy
W = ΔEm
Look for energy in two points
Initial. Fully compressed spring
Em₀ = = ½ k x²
Final. When the block stopped
= 0
Let's look for the work of the rubbing force
W = fr d cos θ
Since rubbing is always contrary to movement, θ = 180
W = - fr d
Let's use Newton's second Law, to find the force of friction
Y Axis
N- w = 0
N = mg
The equation for the force of friction is
fr = μ N
fr = μ mg
We substitute in the work equation
W = - μ m g d
We write the relationship of work and energy
-μ m g d = 0 - ½ k x²
d = ½ k x² / μ m g
Let's calculate
d = ½ 131 2.1 2 / (0.74 2 9.8)
d = 19.92 m
Five separate series circuits you use at home or school, including the item or items that cause resistance, are:
<span>1. </span>Any switch that controls a single bulb in a series circuit.
<span>2. </span><span>The dimmer switch is in series with the bulb.</span>
<span>3. </span>Freezers and Refrigerators
<span>4. </span>Water heaters
<span>5. </span>Lamps
Five separate parallel circuits you use at home or school, including the item or items that cause resistance are
<span>1. </span>A switch which controls multiple bulbs.
<span>2. </span>Television
<span>3. </span>Fans
<span>4. </span>Electric bell
<span>5. </span><span>Electrical appliances.</span>