Answer:
Yes they can stop or bat the puck with their open hand
Explanation:
Which has the greater density, 5 kg of lead or 10 kg of gold?
factors effecting time period of shm
Answer:
In fact, the mass m and the force constant k are the only factors that affect the period and frequency of simple harmonic motion.
A person walking in high heals can damages the floor by making small dimples in the
floor since all their weight is concentrated on the tip of the high heal. It the person
weighs 81 kg and the high of the tip of the high heal is 3.5 cm2, what is the force over
the floor?
SHOW WORK IF POSSIBLE TANKS A LOT
Answer:
2 314.28571 kg / m
Explanation:
divide
and you see
Which phrase best describes a car that is slowing down?
Answer:
D.The car has zero acceleration
Answer:A
Explanation:
Which of the following represents a joule?
Select one or more:
O a. kg/(m2/s2
O b. kg*(m2/s2)
O c. kg*(m/s2)
d. N*m
Answer:
d. N*m
Explanation:
Workdone which is measured in Joules is calculated using the formula;
Workdone = force * distance
Where;
Force is measured in Newton
Distance is measured in meters.
Therefore, workdone also has the measurement of Newton-meters.
For the love of God please help me before my mom gets angry about my horrible grades
A 170.0 g sample of a substance is heated to 120.0 °C and then plunged into 200.0 mL of water at 10.0 °C. The resulting mixture has a temperature of 12.6 °C. What is the specific heat capacity of the substance?
I'LL GIVE BRAINLIEST!!!!
Answer:
Heat Lost = (120 - 12.6) deg * 170 g * S = `18260 gm-deg * S
Heat Gained = (12.6 - 10) deg * 200 gm* 1 cal/ gm-deg - 520 cal
S = 520 / 18260 cal / gm-deg = .0285 cal / gm-deg
Since Heat Lost = Heat Gained
7. A very wealthy donor decides to give a large sum of money to your college or university to build the world's largest visible-light gathering telescope. From an astronomical perspective, where would be the best location to put such a telescope? a. in a dark spot right on the campus b. on the west coast of the U.S. very close to sea level (a location like Seattle, for example) c. close to a large city where there are many astronomers to use it d. on a tall, dry mountain peak e. Bayonne, New Jersey
Answer:
the correct answer is d
on a tall, dry mountain peak
Explanation:
A telescope is an instrument that allows the observation of distant bodies whose light is very dim, for this the telescope concentrates a large amount of light with large diameter lenses or mirrors.
The location of a telescope must take into account several aspects:
* The most important that there are no nearby lights that disturb the observation, so it must be away from cities and other strong light sources.
* The climate should be as stable as possible with few temperature variations, to prevent the optical surfaces from fogging up and reducing the thermal expansion that changes the length of the instrument.
* You must choose a place with little rain and therefore little amount of clouds
Based on these needs we can answer which luxury will be the most suitable
a) There is a lot of light nearby
b) there is a lot of humidity and wind
c) there is a lot of light
d) This is an ideal place with low light, low humidity and stability in the climate
e) lots of humidity and light
so the correct answer is d
PLEASE I'M GOING TO FAIL HELPPPP
an object is thrown vertically upward at 25.0 m/s2. If it experiences an acceleration of 9.8 m/s2 what is the velocity 3.0 seconds later?
a) 22 m/s up
b) zero it has hit the ground
c) 22 m/s down
d) 4 m/s up
e) 4 m/s down
A person should believe all the advertisement her or she sees or hears when considering a weight loss program. true or false
Answer:
False. Its your body, you do what you want. Wanna lose weight? Then do some reasearch. Wanna keep how body how it is? Then keep it. Its your body
Explanation:
Why is the sum of forces/net force less than the applied force? Think about the direction of the forces in your answer
Answer:
he same direction the magnitude of the resultant is equal to the scalar sum of the magnitude of the forces, but if they are applied in different directions the magnitude must be found using the Pythagorean theorem
Explanation:
When there are several applied forces, if they are all in the same direction the magnitude of the resultant is equal to the scalar sum of the magnitude of the forces, but if they are applied in different directions the magnitude must be found using the Pythagorean theorem, so which the resulting dowry is less than the sum of the magnitudes.
Let's carry out an example with two forces, F1 and F2 of equal magnitudes
if they are in the same direction
F_total = F₁ + F₂ = 2 F
if they are at 90º
F_total = [tex]\sqrt{F_1^2 + F_2^2}= \sqrt{2} \ F[/tex]
if they are at 180º
F_total = F₁ -F₂ = 0
What is the speed of a wave with a frequency of 100 hz and a wave length of .5 m?
Answer:
Explanation:
There are 2 ways to help with this. Explain the details, which are fairly simple in this topic, or give the formula. My hope is that an explanation will last longer than memorizing the formula. I give you both.
If a wave has frequency, f, of 3 Hz, its period, T, is
1
3
s
. The wavelength,
λ
, is 5 meters. That means that in the time of one period, the wave travels 5 m.
In general,
S
p
e
e
d
=
distance
time
In applying this general definition of speed
↑
to a wave, we have
speed of the wave
=
wavelength
period
Note: we generally use v for speed of a wave. Using the variable names, then that last formula is written
v
=
λ
T
Since
T
=
1
f
, we can also say that
v
=
λ
⋅
f
So, using that last formula
v
=
5
m
⋅
3
H
z
=
15
m
s
Note: the unit Hz is equivalent to what it was called 100 years ago,
cycles
second
(
also cps
)
. Cycles is not a true unit, so the Hz contributed only the "per second" to the result
15
m
s
.
Answer: the speed is =30ms^-1 The speed of a wave is given by "speed" (ms^-1)= "frequency(Hz)" xx "wavelength (m)" The frequency is f=100Hz The wavelength is lambda=0.3m The speed is v=lambdaf=0.3*100=30ms^-1
Explanation:
Extremely large main sequence stars consume their fuel quickly and burn hot and bright. As they consume all their hydrogen, they become supergiants. Describe the changes that take place, in terms of luminosity and temperature, to these large main sequence stars as they exhaust their hydrogen supplies.
Answer: Their temperature decreases dramatically, but their luminosity increases only slightly.
Explanation: Edmentum answer
Would you expect to weigh more on an ocean beach or on top of a mountain? Explain.
Answer:
An Ocean beach
Explanation:
a Ocean beach is far heavier than the top of a mountain, despite that a mountain is made with many heavy rocks a Ocean beach may have light sand but the layers of sand and the width would be way heavier then the top of a mountain.
An air track car with a mass of 6 kg and velocity of 4 m/s to the right collides with a 3 kg car moving to the left with a velocity of 2 m/s. After the collision, the 6kg car continues forward with a velocity of 1 m/s. What is the new velocity of the 3 kg car after the collision?
Remember that moment before collision is equal to the moment after collision.
[tex](m1 \times u1) + (m2 \times u2) = (m1 \times v1) + (m2 \times u2)[/tex]
Plugging in our values,
[tex](6 \times 4) - (3 \times 2) = (6 \times 1) + (3 \times v2) \\ 24 - 6 = 6 \times 3v2 \\ 18 = 18v2 \\ v2 = 1 {ms}^{ - 1} [/tex]
The velocity of the second car after the collision is 8 m/s.
What is law of conservation of momentum ?The law of conservation of momentum states that, within the domain, the total momentum before collision is equal to the momentum after collision.
Here,
Mass of the car to the right, m₁ = 6 kg
Mass of the car to the left, m₂ = 3 kg
Velocity of the first car before collision, u₁ = 4 m/s
Velocity of the second car before collision, u₂ = 2 m/s
Velocity of the first car after collision, v₁ = 1 m/s
According to the conservation of momentum,
(m₁u₁) + (m₂u₂) = (m₁v₁) + (m₂v₂)
(6x4) + (3x2) = (6x1) + (3v₂)
3v₂ = 24
Therefore, v₂ = 24/3
v₂ = 8 m/s
Hence,
The velocity of the second car after the collision is 8 m/s.
To learn more about law of conservation of momentum, click:
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A 55 kg box rests on a horizontal surface. The coefficient of kinetic friction between the box and the surface is 0.30. If the box is pulled at constant velocity over the horizontal surface with horizontal applied force, what is the magnitude of the force of friction and the force applied?
Answer: [tex]161.7\ N[/tex]
Explanation:
Given
Mass of the box is [tex]m=55\ kg[/tex]
Coefficient of kinetic friction [tex]\mu_k=0.3[/tex]
Kinetic friction comes into play when the body is moving
Here, kinetic friction opposes the applied force
kinetic friction is [tex]\mu_kmg[/tex]
thus, the applied force is
[tex]F=\mu_kmg\\F=0.3\times 55\times 9.8\\F=161.7\ N[/tex]
Two people are trying to push a large box across a floor. Person 1 pushes with a force of 15 N to the right, while person 2 pushed with a force of 20 N to the right. What is the net force acting on the box?
5 N to the left
5 N to the right
35 N to the left
35 N to the right
Answer:
35 N to the right
Explanation:
When calculating net force when both forces are on the same side you add them when they are going against each other you subtract them.
If a ball is thrown straight up with an initial velocity of 20 m/s upward, what is the maximum height it will reach?
A 50.0 g golf ball is struck by a driver whose head has a mass of 500.0 kg. The final speed of the golf ball after leaving the tee is 45.0 m/s. Find the final momentum of the golf ball.
A)2.5 kg·m/s
B)5.0 kg·m/s
C)7.5 kg·m/s
D)10.0 kg·m/s
this is my answer sure po ako n tama iyan
Which of the following mass-spring sys
Case A: A spring with a k=300 N/m and a mass of 200 g suspended from it.
Case B: A spring with a k=400 N/m and a mass of 200 g suspended from it.
Explain your answer
This is the question
please help asap
I am not sure of this, but it is either the third option or the last option.
-
J SLC
2SCC
A football player throws a football with a force of 50 N. The ball travels 12 min 3 seconds and
hits a water bucket with a force of 25 N. This causes the bucket to moves a distance of 4
meters in just 2 seconds
Answer:
DO NOT DOWNLOAD THAT LINK, IT WILL SCAM YOU!
Explanation:
Explanation:
hola si me puede dar la respuesta
During a lab investigation, students added four 50 g masses to two boxes and arranged the boxes so that they were motionless on a pulley, as shown in the diagram. The students then followed the procedure described in the box. The students recorded their observations after
each procedure and reset the pulley system to the original conditions.
During which procedures did students observe an unbalanced upward force on Box 1?
Group of answer choices
Procedures 4 and 5
Procedures 3 and 4
Procedures 1, 2, and 3
Procedures 1, 3, and 5
Answer:
Procedures 4 and 5.
Explanation:
Both would cause the box to move up.
4, it becomes lighter
5, the other becomes heavier, pulling it down, causing box one to go up
Since we seek the action of force to push up box 1, the students observes an unbalanced upward force on Box 1 in procedures 4 and procedure 5.
In what procedures did students observe an unbalanced upward force on Box 1?Generally, In procedure 4 we added another mass to the box two, therefore, causing box one to experience an upward force.
Therefore, students observe an unbalanced upward force on Box 1 in procedure 4.
Procedure 5 we remove masses from box 1 resulting in box 2 becoming heavier, pulling it down.
Therefore, students observe an unbalanced upward force on Box 1 in procedure 5.
Read more about Force
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I need to get into uni pls help
TRUE OR FALSE
an airplane is flying on a course directed 60 degrees East of South. If the plane continues, the plane will fly farther south than east
Answer:
True
Explanation:
This Question is a little tricky, so I am unsure if this s the most logical answer.
If you'd look at a compass, 60 degrees south is moreover south then east, and the two imaginary lines are unlikely to intercept.
A 10 kg sled is sitting on top of a 10 m hill what is the potential energy of the sled
Answer:
Explanation:
potential energy=mass*height*gravity
=10*10*9.8
=100*9.8
980 joule
Figure one, voltmeters
Answer:
(i) Half
(ii) 3 V
(iii) V₁
Explanation:
(i) The given parameters are;
The circuits have identical resistances
The number of resistors in circuit 1 = 1 resistor
The number of resistors in circuit 2 = 2 resistors
Let 'R' represent the value of each resistor, we have;
The total resistance of circuit 1 = R Ohm
The total resistance of circuit 3 = 2·R Ohm
∴ The total resistance of circuit 1 = (1/2) × The total resistance of circuit 3
∴ The resistance of circuit 1 is half the resistance of circuit 3
(ii) The potential difference of each cell, V = 1.5 volts
The number of cells in circuit 2 = 2 cells
The total potential difference of the cells of circuit 2 = 2 × 1.5 volts = 3 × volts = 3 V.
The voltmeter reading = The potential difference across the cell or cells it is applied
∴ The voltmeter reading on voltmeter, V₂, applied across the cells of circuit 2 = 3 V
(iii) The voltmeter reading V₁ = 1.5 V
The voltmeter reading V₂ = 3 V
The voltmeter reading V₃ = 4.5/(2·R) × R = 2.25 V
Therefore, the voltmeter reading with the smallest volt, is V₁ = 1.5 V
A freight train is traveling 150 km east to the nearest lumber yard. It took the train 3 hours to arrive. At what velocity is the train traveling
Answer:
2 • – 4
Explanation:
BUUUUUUUUU
Un neumático sin cámara, soporta una presión de 1.5 atm cuando la temperatura ambiente es de 300°K. ¿Qué presión llegará a soportar dicho neumático si, en el transcurso de un viaje, las ruedas alcanzan una temperatura de 67ºC? Atm
Answer:
El neumático soportará una presión de 1.7 atm.
Explanation:
Podemos encontrar la presión final del neumático usando la ecuación del gas ideal:
[tex] PV = nRT [/tex]
En donde:
P: es la presión
V: es el volumen
n: es el número de moles del gas
R: es la constante de gases ideales
T: es la temperatura
Cuando el neumático soporta la presión inicial tenemos:
P₁ = 1.5 atm
T₁ = 300 K
[tex] V_{1} = \frac{nRT_{1}}{P_{1}} [/tex] (1)
La presión cuando T = 67 °C es:
[tex] P_{2} = \frac{nRT_{2}}{V_{2}} [/tex] (2)
Dado que V₁ = V₂ (el volumen del neumático no cambia), al introducir la ecuación (1) en la ecuación (2) podemos encontrar la presión final:
[tex] P_{2} = \frac{nRT_{2}}{V_{2}} = \frac{nRT_{2}}{\frac{nRT_{1}}{P_{1}}} = \frac{P_{1}T_{2}}{T_{1}} = \frac{1.5 atm*(67 + 273)K}{300 K} = 1.7 atm [/tex]
Por lo tanto, si en el transcurso de un viaje las ruedas alcanzan una temperatura de 67 ºC, el neumático soportará una presión de 1.7 atm.
Espero que te sea de utilidad!
Where do human get the stuff they need to survive?
Answer:
Humans survive through gaining nutrients by eating
Answer:
We must have food, water, air, and shelter to survive. If any one of these basic needs is not met, then humans cannot survive. Oxygen is one of the most essential human needs. Our bodies need a consistent supply of it to function properly. Without access to oxygen, you can experience a condition known as cerebral hypoxia, which affects the brain. As little as five minutes without air can result in brain damage. We get food from plants and animals, we get water from rivers and streams, and we get shelter from building anything that is around.
Explanation:
A train is travelling at a speed
of 90 km h-¹. Brakes are applied
so as to produce a uniform
acceleration of - 0.5 m s-². Find
how far the train will go before it
is brought to rest.
Explanation:
[tex]speed : [/tex]
[tex]speed : U = \frac{(90 \times 1000) \: m}{(1 \times 3600) \: s} \\ = 25 \: m {s}^{ - 1} \\ from \: third \: equation \\ {V}^{2} = {U}^{2} + 2aS \\ 0 = {25}^{2} \times (2 \times - 0.5 \times S) \\ 625 = S \\ S = 625 \: m[/tex]
A state of being conscious, or aware, of something is called ________________.
Group of answer choices
A. activation
B. mindfulness
C. persistence
D. motivation
Answer:
B or D
Explanation: