Answer:
To answer this question, we need to use some concepts from electrostatics and trigonometry. First, we need to find the charge on the ball, which we can do by using the formula for the electric force between two point charges:
F=kr2q1q2
where k is the Coulomb’s constant, q1 and q2 are the charges, and r is the distance between them. In this case, we have:
F=kL2qQ
where q is the charge on the ball, Q is the charge on the rod, and L is the length of the string. We also know that the electric force is balanced by the tension in the string, which has a horizontal component equal to F and a vertical component equal to mg, where m is the mass of the ball and g is the acceleration due to gravity. Using trigonometry, we can write:
F=Tsinθ
mg=Tcosθ
where θ is the angle that the string makes with the vertical. Solving for T, we get:
T=cosθmg
Substituting this into the first equation, we get:
F=cosθmgsinθ
Simplifying, we get:
F=mgtanθ
Now we can solve for q, using the values given in the question:
q=kQFL2=kQmgL2tanθ
q=(9.0×109)(5.0×10−6)(0.050)(9.8)(0.50)2tan18.0∘
q=1.3×10−6C
Next, we need to find the electric field at the location of the ball, which we can do by using Gauss’s law for a sphere of charge1. Gauss’s law states that:
∮E⋅dA=ϵ0Qenc
where E is the electric field, dA is an infinitesimal area element on a closed surface, Qenc is the charge enclosed by the surface, and ϵ0 is the permittivity of free space. In this case, we can choose a spherical surface with radius r centered at the rod, which encloses both the rod and the ball. The electric field on this surface is radial and constant, so we can write:
E(4πr2)=ϵ0Q+q
where Q is the charge on the rod and q is the charge on the ball. Solving for E, we get:
E=4πϵ0r2Q+q
Now we can plug in the values given in the question:
E=4π(8.85×10−12)(0.50)2(5.0×10−6)+(1.3×10−6)
E=1.7×105N/C
Therefore, the magnitude of the electric field at the location of the ball is 170 kN/C.
This is because the cloth soaked in water can absorb and evaporate the heat from your forehead.
This technique is used to cool down your fever, and to help you feel better.
Answer:
da
Explanation:
b. about 5 m/s2.
c. about 10 m/s2.
d. about 20 m/s2. E. about 50 m/s2.
We have that From the Question a ball is thrown straight up. At the top of its path its acceleration is
0 m/s2.
Option A
From the question we are told
A ball is thrown straight up. At the top of its path its acceleration is
a. 0 m/s2.
b. about 5 m/s2.
c. about 10 m/s2.
d. about 20 m/s2.
E. about 50 m/s2.
Generally
For a Ball thrown straight up at the top of its path where The gravitational force equals the force of the thrown,the Point where the ball is at equilibrium the Velocity of the ball is zero
Therefore
From the Question
A ball is thrown straight up. At the top of its path its acceleration is
a. 0 m/s2.
Option A
For more information on this visit
Answer:
Stimulants are a group of drugs that result in increased activity in the body. Sometimes referred to as “uppers,” these drugs are frequently abused due to their performance-enhancing and euphoric effects. Generally, those who abuse stimulants experience heightened energy levels and enhanced focus.
Stimulants speed up mental and physical processes, which can produce desirable effects in the short-term by increasing levels of dopamine in the brain. While users may feel great due to the short-term effects of stimulants, long-term abuse of these drugs can have significant consequences, which is why it is so important for those who abuse the drugs to get help as quickly as possible.
Explanation:
hope this works
Answer:
Increases the input force and decreases the input distance
Explanation:
When a force is applied over a given distance, there is an inverse relationship between the applied force and distance. Example is a tommy bar, when the length increases the force required decreases. This principle is applied to this wrench.
It is B, I honestly didn't know