A cheetah is running at 25 m/s has a momentum of +170 kg*m/s. What is the mass
of the cheetah? *
Answer:
6.8kg
Explanation:
170/25=6.8
Which box has a larger upward force (normal force) acting on it?
(A) The box of mass 3M
(B) The box of mass M
(C) The two boxes experience equal sized upward normal forces
Answer:
c
Explanation:
I makes the most sense in math. if you put a 3 in the m box it will be the same. So all they did is take out the 3 in the m box
2. How important salad dressings in a salad?
Answer:
Well its what makes a salad taste good.
13. A lever does 5.0 J of work on a 0.10-kg ball bearing in a pinball machine. The ball's
resulting speed just after leaving the lever is -
.5 m/s
10 m/s
1 m/s
5 m/s
CLEAR ALL
Answer:
The resulting speed of the ball is;
10 m/s
Explanation:
The given parameters are;
The amount of work done by the lever = 5.0 J
The mass of the ball on which the work is done, m = 0.10 kg
By the principle of conservation of energy, we have;
The work done by the lever = The kinetic energy. K.E., gained by the ball
The kinetic energy, K.E., is given by K.E. = 1/2·m·v²
Where, for the ball, we have;
m = The mass of the ball
v = The resulting speed of the ball
Therefore, by substituting the known values, we have;
The work done by the lever = 5.0 J = The kinetic energy. K.E., gained by the ball = 1/2 × m × v² = 1/2 × 0.10 kg × v²
∴ 5.0 J = 1/2 × 0.10 kg × v²
v² = 5.0 J/(1/2 × 0.10 kg) = 100 m²/s²
v = √(100 m²/s²) = 10 m/s
The resulting speed of the ball, v = 10 m/s.
The potential difference between the two terminals on a battery is 9 volts. How much energy is required to transfer 150 coulombs of charge across the terminals?
a. 0.06J
b. 600J
c. 17J
d. 1350J
Answer: 1350J
Explanation:
To solve this, we are going to use the formula for calculating potential difference which is:
Potential difference (V) = Work done (W) / Total charge (C)
Therefore,
9 volts = Work done / 150
Work done = 150 × 9 = 1350J
somebody please help I need exuse to not go to pe because I injured my self anybody know what to say
Answer:
Say you feel like you twisted ur ankle or can move your foot or something in that category
A bicycle and a massive truck have a head-on collision. Which vehicle has more inertia ?
you do 45.0 joules of work and 3.00 seconds how much power do you use
Answer:
15 watt
Explanation:
Power is the rate at which work is done.
This means you divide the work done with the amount of time used to perform the work.
The formula for Power is : P = W/t where;
W= work done in J = 45
t= time in seconds = 3 sec
P= 45/ 3 = 15 watt
A soccer player pumps air into a soccer ball until no more air can be pushed inside. Describe the air inside the soccer ball compared to the air outside the ball. (Use the word "particle" in your explanation.)
Answer:
the filling stops when the pressure of the pump equals the pressure of the interior air plus the pressure of the walls.
Explanation:
This exercise asks to describe the inflation situation of a spherical fultball.
Initially the balloon is deflated, therefore the internal pressure is equal to the pressure of the air outside, atmospheric pressure, when it begins to inflate the balloon with a pump this creates a pressure in the inlet valve and as it is greater than the pressure inside, the air enters it, this is repeated in each filling cycle, manual pump.
When the ball is full we have two forces, the one created by the external walls and the one aired by the pressure of the pump, these forces are directed towards the inside, but the air molecules exert a pressure towards the outside, which translates into a force. When these two forces are equal, the pump is no longer able to continue introducing air into the balloon.
Consequently the filling stops when the pressure of the pump equals the pressure of the interior air plus the pressure of the walls.
Questions 4-6 refer to the following material.
A ball swings freely back and forth in an arc from points I to IV, as shown. Point II is the lowest point
in the path, III is located 0.5 m above II and IV is I m above II. Consider air resistance to be negligible.
IV
111 10.5 m
4. If the potential energy is zero at II, where will the kinetic and potential energies of the ball be equal?
A) At point II
B) At some point between II and III
C) At point III
D) At some point between III and IV
Making good lifestyle choices will prevent all diseases.
Please select the best answer from the choices provided.
T or F
Answer:
False.
Explanation:
A good health can be defined as the state of well-being in which all of the components of an individual's health are in balance. These state of well-being comprises of six (6) important components and they are;
1. Physical: this is a measure of the state of an individual's body or the way the body functions. It is enhanced by eating right, working out or exercising, avoiding drugs and alcohol, maintaining a good body mass index etc.
2. Emotional: this deals with the state of an individual's mind being void of worries, negativity etc.
3. Social: this involves keeping a good relationship with friends, family and many others around.
4. Environmental: it deals with maintaining a hygienic surrounding, that is devoid of pollutants.
5. Mental or intellectual: avoiding unnecessary stress and anxiety while dealing or coping with the realities of life.
6. Spiritual: it encompasses belief systems, values, ideals, morality etc.
When an individual is able to balance all of these above mentioned components, then he or she is said to be healthy.
Hence, making good lifestyle choices will not and cannot prevent all diseases because some diseases are hereditary in nature i.e they can be transferred from a parent to their offspring or generation to another through genetics. Some examples of hereditary diseases are haemophilia, sickle-cell anaemia, thalassemia, cystic fibrosis, etc.
Answer:
false on edge
Explanation:
How far is an object from a concave mirror if the image formed is real , enlarged , and inverted ?
2. An object is moving in the positive x-direction while a net force directed along the x-axis is exerted on
the object. The figure shows the force as a function of position. What is the net work done on the object
over the distance shown?
F
FO
o
2d
3d
-Fof
A) Fid
B) Ford
C) 2Fd
D) 4F,
Answer:
A. F₀d
Explanation:
The formula for work done on an object is given by:
w= f*d
Work done towards the positive direction is given by ;
Work done under the trapezoid shaped area:
1/2 {a+b} h = 1/2 { 2d + d } F₀
W=3/2dF₀
Work done on the triangle shaped part
W= 1/2 * b * h
W= 1/2 * d * -F₀ = -1/2dF₀
The net work done :
3/2dF₀ -1/2dF₀ = 1dF₀
Which circuit does not allow current to flow through it?
A. Circuit D
B. Circuit B
C. Circuit A
D. Circuit C
Answer:
circuit A
Explanation:
because it is not a complete circuit
hope it helps! please mark me brainliest
thank you! have a good day ahead
if u follow me, I will follow u back
Answer:
Circuit A (answer C), does not allow current to flow, because there is no connection between the charge and ground (or positive and negative).
5. This break-dancer's speed is not changing as he spins on his head, but he is
accelerating. Explain how this could be.
The direction of the break dancer is always changing hence we can say that the break dancer is accelerating.
The term acceleration means change of velocity with time. It refers to the time taken for the velocity of a body to change in a specified direction. Recall that velocity takes direction into account.
The direction of the break dancer is always changing hence we can say that the break dancer is accelerating since his direction is changing even though the speed is constant.
Learn more about acceleration: https://brainly.com/question/2437624?
what is meant by lateral inversion
Answer:
Explanation:
Lateral inversion is a phenomenon where the right seems to be on the left and left seems to be on the right.It occurs due to the direction is reflecting of a direct surface.An example of this is a mirror/window.A mirror is a better example to explain this! Hope this helps lemme know if u dont
Wood frogs have camouflaged skin so they blend into the background very well.
They also have a layer of mucous on their skin so they can slip away from
predators. What type(s) of adaptations are these?
Answer:
Anti-predator adaptation.
Explanation:
Their habitat is the forest and woodland. Their way of life fits into the anti-predator adaptation but I'm not 100% sure that I'm correct.
108kmh-1 = _____ ms-1
Answer:
30 ms⁻¹
Explanation:
Given:
108kmh⁻¹
Find:
Change into ms⁻¹
Computation:
⇒ 1 km = 1,000 m
⇒ 1 hour = 60 x 60 = 3,600 sec
So,
⇒ 108[1,000/3,600]
30 ms⁻¹
If a CFOC was launched and travels 65 meters and is in the air for 3 seconds, what is the launch velocity and angle?
Answer:
Lauch velocity (u) = 26.15 m/s
Lauch Angle (θ) = 35°
Explanation:
From the question given above, the following data were obtained:
Range (R) = 65 m
Time of flight (T) = 3 s
Acceleration due to gravity (g) = 10 m/s²
Lauch velocity (u) =?
Lauch Angle (θ) =?
R = u²Sin2θ /g
65 = u² × Sin2θ /10
Recall:
Sin2θ = 2SinθCosθ
65 = u² × 2SinθCosθ / 10
65 = u² × SinθCosθ / 5
Cross multiply
65 × 5 = u² × SinθCosθ
325 = u² × SinθCosθ .....(1)
T = 2uSinθ / g
3 = 2uSinθ / 10
3 = uSinθ / 5
Cross multiply
3 × 5 = uSinθ
15 = u × Sinθ
Divide both side by Sinθ
u = 15 / Sinθ....... (2)
Substitute the value of u in equation (2) into equation (1)
325 = u² × SinθCosθ
u = 15 / Sinθ
325 = (15 / Sinθ)² × SinθCosθ
325 = 225 / Sin²θ × SinθCosθ
325 = 225 × SinθCosθ / Sin²θ
325 = 225 × Cosθ / Sinθ
Cross multiply
325 × Sineθ = 225 × Cosθ
Divide both side by Cosθ
325 × Sineθ / Cosθ = 225
Divide both side by 325
Sineθ / Cosθ = 225 / 325
Sineθ / Cosθ = 0.6923
Recall:
Sineθ / Cosθ = Tanθ
Tanθ = 0.6923
Take the inverse of Tan
θ = Tan¯¹ 0.6923
θ = 35°
Substitute the value of θ into equation (2) to obtain the value of u.
u = 15 / Sinθ
θ = 35°
u = 15 / Sin 35
u = 15 / 0.5736
u = 26.15 m/s
Summary:
Lauch velocity (u) = 26.15 m/s
Lauch Angle (θ) = 35°
1 point
(e) When food is eaten, some of the radiation the food emits is detectable
outside the body. Which type of radiation would not be detectable outside
the body? Tick one box.*
alpha
beta
gamma
Answer:
alpha radiation
Explanation:
e ) Alpha particles can not be detected outside body as it can not penetrate the layer of skin of our body .
So correct answer is "alpha radiation" .
construction, principal and working of electric motor
What is the acceleration of a car going 50 mph that slows down to rest over 10 seconds?
Answer:
If the velocity is constant, then there is no acceleration. That is, the value of the acceleration is 0.
Explanation:
When an object is in a. Gravitas field it has energy in its
Answer:
Explanation:
It is the energy an object has on its virtue of mass.Because the energy acting on the object is working being done to keep that object in the position is it.
What is the answers of this ! Need help I don’t know what to do
Answer:
1) Mass of Egg Chamber → 35 g = 35 g × 1 kg/(1000 g) = 0.035 kg
2) Average Mass of Grade A Egg → 56.7 g = 0.056 kg
3) Calculated Mass
Drop Chamber + Egg → (35 + 56.7) g = 91.7 g = 91.7 g × 1 kg/(1000 g) = 0.0917 kg
4) Time of Drop → 1.5 seconds
5) Maximum Velocity of Drop Chamber (v = g·t) → v = 9.8 m/s² × 1.5 s = 14.7 m/s
6) Maximum Momentum of Drop Chamber
(P = m·v) (right before hitting the ground) → p = 0.0917 kg × 14.7 m/s = 1.34799 kg·m/s
7) Final End Momentum of Drop Chamber → After landing, velocity v = 0 m/s
(p = m·v after landing) [tex]{}[/tex] ∴ p = m·v = m × 0 m/s = 0 kg·m/s
8) Impulse on Impact → [tex]{}[/tex] (0 - 1.34799) kg·m/s = 1.34799 kg·m/s
(Δm·v = Final - Initial)
9) Force on Impact [tex]{}[/tex] → F·t = Δm·v = 1.34799 N·s
(F·t = Δm·v)
Explanation:
If the power output for an instrument is 70.0W find the distance where the intensity is 0.0089 W/m2?
WITH THE EXPLANATION PLSSSSS
Answer:
r = 50[m]
Explanation:
Since the instrument has an operating or range radius, we must calculate this working distance or radius. We can determine the working area with the values that were given to us.
[tex]A=\frac{70W}{0.0089\frac{w}{m^{2} } } \\\\A=7865.16[m^{2} ][/tex]
Now using the area of the circle we can find the radius.
[tex]A=\pi *r^{2} \\7865.16=\pi *r^{2} \\\\r=\sqrt{\frac{7865.16}{\pi } } \\r=50[m][/tex]
Jason writes a report about how the land changes due to the movement of magma in earth's mantle. which of the following is he most likely including in his report?
Answer: can I have answer choices
Explanation:
Now that you’ve verified there’s current through the electromagnet, uncheck the Show Electrons box. This action turns off the electrons. (The current is still there; we just don’t see it.) Check the Show Compass box. Move the compass to the bottom right side of the coil. Does the electromagnet affect the compass needle?
Yes, the electromagnet still affects the compass needle.
(plato answer)
yeah, it affects the needle
What do executive departments do?
Answer:
Image result for What do executive departments do?
Under Article II of the Constitution, the President is responsible for the execution and enforcement of laws created by Congress. Fifteen executive departments—each led by an appointed member of the President's Cabinet—carry out the day-to-day administration of the Federal Government.
Explanation:
The Cabinet and independent federal agencies are responsible for the day-to-day enforcement and administration of federal laws. ... Fifteen executive departments — each led by an appointed member of the President's Cabinet — carry out the day-to-day administration of the federal government.
Select each correct answer. More than one answer may be correct.
Which of the following forces between two objects can be repulsive?
gravitational force
magnetic force
electrostatic force
!!!NEED ASAP!!!
Sebastian wants to write the chemical formula for phosphorus tetraoxide. He identifies the chemical symbols as P and O. Which additional step will he take in his process?
A. Identify the elements involved as potassium and oxygen
B. Add a subscript of 4 after O
C write the chemical symbols, in order, as Op
D. Use the prefix tetra before oxygen
Answer: C
Explanation: I guessed, don’t hurt me
Answer:
The correct answer is B
Explanation:
