why does an object have a negative charge
Explanation:
An object will have a negative charge when an atom has gained electrons . it is called an anion
Why did Kenyatta want to distance himself from the Mau Mau? Check all that apply.
They had no desire for independence.
The British were determined to crush the rebellion.
They were criminals and made achieving independence more difficult.
They were led by his political rivals.
They were members of the Kikuyu.
Answer:
B and C!
Explanation:
I just did it on edge. I hope this helps!
What respiratory structure controls breathing?
A.
diaphragm
B.
lungs
C.
heart
D.
trachea
Lungs is what helps u breath
Answer:
i think the answer is :lungs
A roller skater of 47kg moving with a velocity of 12 m/s to the east picks up a bag of 6.0 kg. What is the final velocity of the person traveling with the basket? show your work HINT: Use the law of conservation of momentum in the perfectly inelastic collision m1v1i + m2v2i = (m1+m2) vf
Answer:
v_f = 10.85 m/s
Explanation:
We will apply the law of conservation of momentum here:
[tex]m_{1}v_{1i} + m_{2}v_{2i} = m_{1}v_{1f}+m_{2}v_{2f}\\[/tex]
where,
m₁ = mass of roller skater = 47 kg
m₂ = mass of bag = 6 kg
v_1i = initial speed of roller skater = 12 m/s
v_2i = initial speed of the bag = 0 m/s
v_1f = final speed of the roller skater = ?
v_2f = final speed of the bag = ?
Both the bag and the skater will have same speed at the end because kater is carrying the bag:
v_1f = v_2f = v_f
Therefore, the equation will become:
[tex](47\ kg)(12\ m/s)+(6\ kg)(0\ m/s)=(47\ kg)(v_{f})+(5\ kg)(v_{f})\\564\ N.s = (47\ kg+5\ kg)(v_{f})\\v_{f} = \frac{564\ N.s}{52\ kg}\\[/tex]
v_f = 10.85 m/s
The idea of not wanting or doing too much or too little is called (ex. eat
way too much or starve yourself)
Answer: below
Explanation:
binge eating then purging. Often known as bulimia. It's an eating disorder. If you starve yourself you have anorexia. If its an idea you are paranoid. Or you are very depressed and you want to get rid of your emotions. It could be called starving yourself too. But you may be looking for the word Orthorexia
Calculate the decrease in gravitational potential energy of the ball as it moves down through the 0.90m the mass of the ball is 0.60kg
Answer:
G.P.E = 5.292 Joules
Explanation:
Given the following data;
Mass = 0.6 kg
Height = 0.9 m
To find the gravitational potential energy;
Gravitational potential energy (GPE): it is an energy possessed by an object or body due to its position above the earth.
Mathematically, potential energy is given by the formula;
[tex] G.P.E = mgh[/tex]
Where,
G.P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
But we know that acceleration due to gravity is equal to 9.8m/s²
G.P.E = 0.6*9.8*0.9
G.P.E = 5.292 Joules
Can someone pls help me with this? Its due in 25 minutes
3. What is the mass of a sample of alcohol (Specific heat = 2445 J/kg °C.) If it requires
4780 J of heat to raise the temperature by 5.43°C?
Given
Unknown Equation. Substitution
Solved
Answer:
Q=mc∆tita.
4780J= m × 2445J/kg/°C × 5.43°C
4780J= m× 13276.35J/kg
m= 0.36Kg
Two rocks are at the top of a building. Rock 1 is dropped from rest while Rock 2 is thrown horizontaly at a velocity of 5 ms.
What is the magnitude of the horizontal acceleration of rock 2?>
Omis 2
2 ms 2
5 ms 2
10 mis2
Answer:
I'm pretty sure the answer is 0 m/s²
Explanation:
The horizontal velocity of the second rock is 5 m/s, so if we pretend air resistance doesn't exist, it will maintain that horizontal velocity, meaning that there is no horizontal acceleration.
screw cannot be driven if there is no force
Answer:
Explanation:
trye
answer..
if this is a true or false question it is true
hope my ans helps
please give brainliest to my answer
be sure to follow me
stay safe
have a good day
Gravity pushes objects away from each other TRUE OR FALSE
Answer:
false
Explanation:
What is the momentum of a 0.01 kg toy car moving at 5.0 m/s?
500 kgm/s
50 kgm/s
0.5 kgm/s
O
0.05 kgm/s
Answer:
0.05 kgm/s
Explanation:
what units is time measured in
Answer:
The base unit for time is the second (the other SI units are: metre for length, kilogram for mass, ampere for electric current, kelvin for temperature, candela for luminous intensity, and mole for the amount of substance). The second can be abbreviated as s or sec.
Explanation:
HELPP ILL GUVE YOU LOTS OF POINTS EVERYTHING U WANT I REALLY NEED HELP
Answer:
ok so I'm going left to right
a) 3 2 1 4
b) i don't know
A team of landscapers pull an unplanted tree across the the lawn of the forces listed identify which act upon the tree
Answer:
Tension, Friction, normal force and gravitational force.
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer these correctly!!!! (40pts)
Answer:
Bernoulli is A
Archimedes is B
Pascal is C
Explanation:
Hope this helps dude
Answer:
Pascal's Law = C
Archimedes's Law = B
Bernoulli's Law = A
Explanation:
Alrighty, here are the prinicples needed:
In Pascal's law, he states that the pressure applied to an enclosed fluid is directly transmitted without the change in magnitidue. With that, magnitude in every point of the fluid and the walls of the container are remained unchanged. To say simply,the fluid is equal to the pressure at any point in all directions.
[tex]P=\frac{F}{A}[/tex]
Where:
F = Force
A = Area
Archimedes Law states that the buoyant force is the weight of the fluid displaced. When any boat displaces a weight of water equal to its own weight, it floats. This is often called the “principle of flotation” where a floating object displaces a weight of fluid equal to its own weight.
[tex]F_{b} = -pgV[/tex]
Fb = buoyant force
-p = fluid density
g = acceleration due to gravity
V = fluid volume
The Bernoulli law states that total energy per unit mass of flowing fluid, at any point in the subsurface, is the sum of the kinetic, potential, and fluid-pressure energies and is equal to a constant value.
I hope that this provided you with some clarification and that you have a nice day. I would be happy to help you again in the future. :D
Use each of the following terms in a separate
sentence: insulation, heat engine, and thermal
pollution.
The old farm house had been wrapped in insulation and sided.
refrigerator may be considered to be a heat engine operated in reverse.
The warmed water may become a thermal pollution problem in terms of the receiving body of water.
Which best represents the reaction of calcium and zinc carbonate (ZnCO3) to form calcium carbonate (CaCO3) and zinc? Ca → ZnCO3 + CaCO3 → Zn Ca + ZnCO3 → CaCO3 + Zn CaCO3 + Zn → Ca + ZnCO3 CaCO3 + Zn + Ca → ZnCO3
Answer:
Ca + ZnCO3 → CaCO3 + Zn
Explanation:
Ca + ZnCO₃ = CaCO₃ + Zn
Ca + ZnCO3 → CaCO3 + Zn is the answer.
Here Ca and ZnCO₃ are reactant and CaCO₃ and Zn are product . Reactants are written on the left side of equation and product are written on the right side.
Answer:
The correct option is, Ca + ZnCO3 —> CaCO3 +Zn
Explanation:I got it right.
The hierarchy of traits is a structured progression of personality that begins with a few higher-order traits that result in
several lower-order traits, determining a person's response in a specific situation.
Please select the best answer from the choices provided
OT
OF
Answer:
true
Explanation:
hope u find this helpfull
Due tonight, stuck between b and d
Which pair of graphs represent the correct relationship between position x and velocity v of a moving object?
Well we can't see (B) in your picture, so we can't comment on it.
But ' D ' depicts a correct relationship between a position and a speed.
(And C doesn't.)
Answer:
We can't see B, but D would be correct while C would not be.
Explanation:
C shows an object not moving with the position graph and shows the object decelerating in the velocity graph.
D shows the object moving at a constant speed in a positive direction and the velocity graph shows a constant velocity.
I need help!! Any feedback, please?
Answer:
A. Quarter or less of the entire moon
Explanation:
This is because as the Moon revolves around the Earth, the light of the sun that is falling on the moon gets blocked by the Earth when we see the crescent moon.
That's why we only see the quarter or less of the entire moon shining on crescent moon night.
A horizontal force of 164 N is applied to move a 55 kg television set across a 9 m level surface. What is the work done by the force on the television set?
Answer:
Workdone = 1476 Nm
Explanation:
Given the following data;
Force = 164 N
Mass = 55kg
Distance = 9 m
To find the work done;
Workdone = force * distance
Workdone = 164 * 9
Workdone = 1476 Nm
Therefore, the work done by the force on the television set is 1476 Nm.
is the us warmer than antarctica?
Answer:
Yes
Explanation:
Antarctica is usually always cold.
What is friction ridge skin?
Question 29 (1 point)
Fluorescence is the production of light energy when an object is heated to a high temperature.
a) True
b) False
An 8 kg toddler is running at a speed of 10 m/s.
how much energy does he have?
If you move 50 meters in 10 seconds, what is your speed?
Answer: 5 meters per second (5mps)
Explanation:
Simply take 50 and divide it by 10
[tex]\frac{50}{10} =5[/tex]
Which of the following scenarios demonstrates a transfer
between kinetic energy and potential energy?
a using a playground slide.
b
going up and down stairs.
C bouncing on a trampoline.
d all of the above.
Check it
Answer:
c
Explanation:
bouncing on a trampoline
Answer:
D: All of the Above
Explanation:
I checked C and was wrong so trust me it is D
In winter the air just above the top bunk of a bunk bed is warmer than the air just above the bottom bunk because warm air rises. Which of the following describes the method of heating that causes this difference in temperature?
Answer:
the heating method in here is conventional heating due to the warn air goes to the top bunk whereas the cold air sinks down
4. Zyan is trying to swim across the English Channel in a north to south direction
at 5km/h. There is a 2km/h west to east current in the channel. What is his
resultant swimming velocity?