Answer:
Gram (g) and Kilogram (kg) are used to measure mass.
Metre (m) and Kilogram (kg) are used to measure force.
The two units for measuring mass and two units for measuring force are kilogram and gram and Newton and pound respectively.
The kilogramme (kg), the standard unit of mass in the International System of Units (SI), is frequently used in both ordinary and scientific mass measurements.
Gramme (g): Because it is a more compact unit of mass, the gramme is frequently employed for smaller and more exact measurements. It is the same as one thousandth of a kilogramme.
Newton: The SI unit of force is the newton. A kilogramme of mass is defined as the force needed to accelerate it by one metre per second squared.
lb (pound): In non-SI systems, particularly in the US, the pound is a widely used unit of force. It is explained as the amount of force needed to move a one-pound mass one square foot per second.
Thus, the units are kilogram and gram for mass and Newton and pound for force.
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Two balls have the same mass. One ball moving along the positive x–axis and the other ball moving along the positive y–axis undergo perfectly inelastic collision. What can you say about the motion of the balls after the collision?
A.
The balls stick and move together.
B.
The balls separate immediately.
C.
The first ball stops while the other ball starts moving.
D.
The two balls travel off in opposite directions, 180° apart.
Answer:
A. The balls stick and move together.
Explanation:
When a bodies undergo perfectly inelastic collision, the two bodies stick together after the collision and begins to move.
In this collision, kinetic energy is not conserved. For perfectly elastic collision, the two bodies conserve kinetic energy and begin to move apart.
Kinetic energy is not conserved because some of the energy gets converted into other forms of energy.
What is a free electron? Can someone help?
A turtle is moving at a speed of 1.5 m/s for a time of 120 s. What is the distance the turtle travels?
Answer:
The answer is 180 mExplanation:
The distance covered by an object given it's velocity and time taken can be found by using the formula
distance = velocity × time
From the question we have
distance = 1.5 × 120
We have the final answer as
180 mHope this helps you
Answer:
180 meters
Explanation:
1.5 m/s x 120 s
A truck weighing 3.0 × 104
newtons was driven up a
hill that is 1.6 × 103
meters long to a level area that
is 8.0 × 102
meters above the starting point. If the
trip took 480 seconds, what was the minimum power
required?
Answer:
5.0x10^4
Explanation:
Im gunna geuss that you didn't add the exponents so...
P=power
F=force
d=displacment
P=Fd
equation:
3.0x10^4(1.6x10^3 - 8.0x10^2)/480
=30000(800)/480
=50000 or 5.0x10^4
The minimum power required, if a truck weighing 3 × 10 ⁴ newtons were driven up a hill that is 1.6 × 10 ³ meters long to a level area that is 8.0 × 10 ² meters above the starting point, is 5 × 10 ⁴ Watt.
What is power?Power is the rate at which work is accomplished or energy is delivered in science and engineering. It can be written as W/t, which is the product of the amount of work finished (W) or energy transferred (E) divided by the amount of time (t).
A low-powered motor can carry out the same amount of work slowly, whereas a high-powered motor can finish it rapidly. To measure work (or energy) per unit of time, power units include foot-pounds per minute, joules per second (or watts), and ergs per second.
Given:
The weight of the truck, F = 3 × 10 ⁴ N,
The length of the hill, s = 1.6 × 10 ³ m,
The distance travelled, S = 8 × 10 ² m,
The time of the trip, t = 480 sec,
Calculate the power by the formula given below,
[tex]Power = Force \times displacement / time[/tex]
P = 3 × 10 ⁴ × (1.6 × 10 ³ - 8 × 10 ²) / 480
P = 5 × 10 ⁴ Watt
Therefore, the minimum power required, if a truck weighing 3 × 10 ⁴ newtons were driven up a hill that is 1.6 × 10 ³ meters long to a level area that is 8.0 × 10 ² meters above the starting point is 5 × 10 ⁴ Watt.
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Strontium, Sr, will
valence electrons when forming an ionic bond.
O lose 1
Olose 3
Olose 2
O gain 1
Answer:
lose 2
Explanation:
Sr is an alkali metal which forms 2+ ion.
Write an equation of the line in slope-intercept form.
A net force of 20 N is applied to a 5 kg object. What is the acceleration of the object?
Answer:
[tex]4ms^{-2}[/tex]
Explanation:
F = ma
Rearrange to get acceleration on its own:
a = [tex]\frac{F}{m}[/tex]
Substitute 20 for F and 5 for m:
a = [tex]\frac{20}{5}[/tex] = 4 meters/second/second
in the movie "gravity" - Why did the escape pod get stuck and pulled back?
Answer:
because nono gravity
Explanation:
no gravity
A net force of 10.N accelerates an object at 5.0 m/s^2. What net force would be required to accelerate the same object at 1.0 m/s^2?
A.) 1.0 N
B.) 5.0 N
C.) 50. N
D.) 2.0 N
Answer:
I believe the answer is 2.0
Explanation:
The net force that would be required is 2 N
From the question,
We have that
A net force of 10 N accelerates an object at 5.0 m/s².
To determine the net force that would be required to accelerate the same object at 1.0 m/s²,
First, we will determine the mass of the object
From the Newton's second law of motion, we have that
F = ma
Where F is the force
m is mass
and a is acceleration
From the given information
F = 10N
a = 5.0 m/s²
Putting the above parameters into the formula, we get'
10 = m × 5.0
∴ m = 10 ÷ 5.0
m = 2 kg
∴ The mass of the object is 2kg
Now,
For the net force that would be required to accelerate the same object at 1.0 m/s²,
Using the same formula
F= ma
Here,
a = 1.0 m/s²
and m = 2 kg
∴ F = 2 × 1
F = 2 N
Hence, the net force that would be required is 2 N
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A student lists a set of materials
1. Wood
2.hydrogen gas
3. Milk
4. Water
Which materials can be medium through which a wave can travel
A. hydrogen gas
B.wood
C. Milk and water
D. wood, hydrogen gas, milk, and water
Answer:
D. wood, hydrogen gas, milk, and water
Explanation:
Waves will transmit through wood, hydrogen gas, milk and water.
Waves are disturbances that propagates energy usually through a material medium.
Most mechanical waves pass through the given medium. Only electromagnetic waves do not really require a material medium for their propagation. They can be propagated through a vacuum.
You are twice as likely to become good friends with the person who is in the dorm room next to you than the person two doors down. This is due to:
A. Proximity.
B. Common Interests.
C. Shared Values.
D. Social Background
Which of the following statements best describes the corn plants below?
Answer:
The Bt gene is inserted into one plant cell by using a bacterial plasmid.
Explanation:
Choose all the answers that apply.
Check all the statements that are correct.
An independent variable is the variable which is changed.
The dependent variable is the variable which is observed as a result of the change.
If data can be repeated, it cannot be trusted.
Experiments are usually published to communicate findings to the scientific community.
Disproving a hypothesis means it cannot be tested again.
Answer: An independent variable is the variable which is changed. Experiments are usually published to communicate findings to the scientific community.
Disproving a hypothesis means it cannot be tested again.
Explanation: i hoped that helped.
A gas occupies 500mL at a temperature of 20 degrees Celsius. What is the volume at 150 degrees Celsius?
Answer: 3750 ML
Explanation:
A rock falls off a cliff that is 82 m high. How fast is the rock moving when it hits the ground?
Answer:
40.1m/s
Explanation:
This is a kinematics problem
x = 82m
a = -9.8m/s^2
v(initial) = 0
Find: v(final)
Using kinematics equation:
vf^2 = vi^2 + 2a(delta)x
vf^2 = 0 + 2*(-9.8)*(82)
vf = sqrt(1607.2) = 40.09m/s
The is traveling with a velocity of 40.1m/s when it hits the ground.
What is the gravitational acceleration on which a 2-kilogram mass has a weight of 16 Newton's?
Answer:8 m/s ^2
Explanation:
What question does physics have today
Question 2 (2 points)
If an atom was the size of a sprinkle, about how thick would a strand of hair be?
Answer:
like a stran of yarn
Explanation:
because if shhsjsjsjwjwjwkqkq
How much time will it take for a truck to travel 20 meters if it is traveling at 4 m/s?
Answer:
The answer is 5 sExplanation:
The time taken can be found by using the formula
[tex]t = \frac{d}{v} \\ [/tex]
d is the distance
v is the velocity
From the question we have
[tex]t = \frac{20}{4} \\ [/tex]
We have the final answer as
5 sHope this helps you
A high-speed train in Japan travels a distance of 300. kilometers in 3.60 x 103 seconds. What is the average speed of this train? (Turn the time into hours by using a unit conversion)
Answer:
The average speed is 83.3 m/s
Explanation:
20. Show that an acceleration of 0.67 m/s/s is the result if a force of 1000N is exerted on a 1500 kg
car.
Explanation:
Given parameters:
Mass of the car = 1500kg
Force applied = 1000N
Acceleration = 0.67m/s²
Unknown:
Proof that the acceleration will result from the applied force on the car
Solution:
According to newton's second law of motion,
Force = mass x acceleration
So;
Acceleration = [tex]\frac{Force }{mass}[/tex]
Now insert the parameters and solve;
Acceleration = [tex]\frac{1000}{1500}[/tex] = 0.67m/s²
We have shown that the acceleration is 0.67m/s²
Math Practice: Cart A loaded with blocks (600g) moving left at 0.7m/s hits stationary cart B (200g).
After the collision, both carts move left, Cart A at speed 0.27m/s.
What is the velocity of cart B after the collision? Show your work.
Answer:
The velocity of cart B after the collision is 1.29 m/s.
Explanation:
We can find the velocity of cart B by conservation of linear momentum:
[tex] p_{i} = p_{f} [/tex]
[tex] m_{A}v_{A_{i}} + m_{B}v_{B_{i}} = m_{A}v_{A_{f}} + m_{B}v_{B_{f}} [/tex]
Where:
[tex]m_{A}[/tex] is the mass of cart A = 600 g = 0.6 kg
[tex]m_{B}[/tex] is the mass of cart B = 200 g = 0.2 kg
[tex]v_{A_{i}}[/tex] is the inital velocity of cart A = 0.7 m/s
[tex]v_{A_{f}}[/tex] is the final velocity of cart A = 0.27 m/s
[tex]v_{B_{i}}[/tex] is the initial velocity of cart B = 0
[tex]v_{B_{f}}[/tex] is the final velocity of cart B =?
Taking the left direction as the positive horizontal direction:
[tex] 0.6 kg*0.7 m/s + 0 = 0.6 kg*0.27 m/s + 0.2 kg*v_{B_{f}} [/tex]
[tex] v_{B_{f}} = 1.29 m/s [/tex]
Therefore, the velocity of cart B after the collision is 1.29 m/s.
I hope it helps you!
What is the average amount of time an American spends consuming media in a week?
A. 10 hours
B. 18 hours
C. 22 hours
D. 28 hours
Please collect the best answer from the choices provided
HURRY!!
Answer: D. 28 hours
Explanation: on edge 2020 :))
The average amount of time an American spends consuming media in a week is 28 hour.
What is Media?Media is the plural form of medium, which (broadly speaking) describes any channel of communication. This can include anything from printed paper to digital data, and encompasses art, news, educational content and numerous other forms of information.
The average amount of time an American spends consuming media in a week is 28 hour.
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Rate at which wave travels or propagates
Answer:
v =fλ v = f λ where v
Explanation:
CUAL DE LAS SIGUIENTES LEYES NO PERTENECEN A LOS 3 PRINCIPIOS DE NEWTON? 1.LEY DE LA ATRACCION 2.LEY FUNDAMENTAL DE LA DINAMICA 3.LEY DE ACCION Y REACCION 4.LEY DE LA INERCIA
Answer:
La Ley de atracción no pertenece a los tres principios de Newton.
Explanation:
Las leyes de Newton son tres principios que sirven para describir el movimiento de los cuerpos, basados en un sistema de referencias inerciales (es aquél que está en reposo o se mueve con velocidad constante, es decir, no tiene aceleración).
Las 3 leyes de Newton son:
Primera Ley o Ley de Inercia : Esta ley enuncia que todo cuerpo permanece en su estado de reposo o de movimiento rectilíneo uniforme a menos que otros cuerpos actúen sobre él. Explica que para modificar el estado de movimiento de un cuerpo es necesario actuar sobre él. Segunda ley o Principio Fundamental de la Dinámica : Esta ley dice que la fuerza que actúa sobre un cuerpo es directamente proporcional a su aceleración. Es decir, si sobre un cuerpo actúa una fuerza, dicho cuerpo modificará su velocidad, es decir, adquirirá una aceleración. Dicha fuerza y su aceleración generada son proporcionales y están relacionadas mediante: F=m*a donde F es la fuerza aplicada, m es la masa del cuerpo sobre el que se aplica la fuerza y a es la aceleración adquirida por dicho cuerpo.Tercera ley o Principio de acción-reacción : Esta ley expresa que cuando un cuerpo ejerce una fuerza sobre otro, éste ejerce sobre el primero una fuerza igual y de sentido opuesto.Entonces, la Ley de atracción no pertenece a los tres principios de Newton.
which hygiene step would best help prevent the flu
Answer:
taking a shower brushing your teeth and washing your hands
Explanation:
Answer:
D. Washing your hands regularly
Explanation:
Write one example situation of Newton's Third Law involving mass that are the same.
Answer:
Examples of Newton's third law of motion are ubiquitous in everyday life. For example, when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air. Engineers apply Newton's third law when designing rockets and other projectile devices.
Canada and United States both have economies
Answer:
That is true but US has the largest economy of the world. Canada is in the top of the list in economy.
Explanation:
Answer:
The United States has a much stronger economy than Canada tho due to Canada's icy terrain.
Explanation:
Dr. Aloysius found four homogeneous mixtures, but he thinks that only three are alloys. He tests each one and determines their elemental compositions. Which of the following is not a possible alloy?
A. carbon and boron
B. iron an nickel
C. aluminum and magnesium
D. iron, carbon, and nickel
Answer:
A. carbon and boron
Explanation:
Carbon and boron is not an alloy.
An allow forms between metals and metals using their huge electron could.
Carbon is a non-metal, boron is a also a non-metal
Two non-metals combining together does not make an alloy.
Iron, nickel, aluminum are all metals.
Answer:
carbon and boron
Explanation:
carbon and boron
Two identical cars are driving along the motorway. Car A is travelling at 50 km/h and Car B is travelling at 80km/h. Which car has the most drag acting on it?
Answer:
i think it is car B because the greater the speed, the greater the drag force acting on the vehicle
Explanation: