Answer:
60,000 kgm/s
Explanation:
momentum equation,
momentum = mass × velocity.
mass = 2000kg
velocity = 30m/s
when multipled you get = 60,000 kgm/s
hope it helps. :)
Write 3 rules that describe the possible behaviors that occur when objects with different charges are brought close together
Explanation:
1. attract
2.repel
3. no effect
Un atleta tiene en un instante dado una velocidad de 4 m/s. Si a partir de ese instante y durante 2 s adquiere un MRUA con una aceleración de 3 m/s2. Calcula la velocidad que alcanza al cabo de esos 2 s.
Answer:
Velocidad final, V = 8 m/s
Explanation:
Dados los siguientes datos;
Velocidad inicial, u = 4 m/s
Aceleración, a = 2 m/s²
Tiempo, t = 2 segundos
Para encontrar la velocidad final (v), usaríamos la primera ecuación de movimiento;
V = u + at
Sustituyendo en la fórmula, tenemos;
V = 4 + 2*2
V = 4 + 4
Velocidad final, V = 8 m/s
That minimum coefficient of static friction between the tyres and the road that will allow the car that will round safely.
Answer:
The answer is "[tex]0.13562748[/tex]"
Explanation:
Please find the complete question in the attached file.
Using formula:
[tex]\bold{U_s=\frac{v^2}{rg}}[/tex]
Given:
[tex]r=1.60 \times 10^2 \ m\\\\g=9.8\\\\v= 52.5\ \frac{km}{hr}= 14.583\ \frac{m}{s}[/tex]
put the value into the above-given formula:
[tex]U_s= \frac{14.583^2}{160 \times 9.8}[/tex]
[tex]= \frac{212.663889}{1568}\\\\=0.13562748[/tex]
If a chemical reaction has a AH value of -125 kJ, it would be considered what?
A. an exothermic reaction
B. a reaction that absorbs energy
C. an endothermic reaction
D. A reaction that probably gets cold
exothermic
Explanation:
negative means it's losing energy
What is the minimum force required to increase the energy of a car by 69 J over a distance of 42 m? Assume the force is constant.
Group of answer choices
0.61 N
69 N
2900 N
1.6 N
110 N
what does heat trapped by pollution cause?
A. Acid rain
B. Decomposition
C. Greenhouse effect
Answer:
C. Greenhouse Effect
Explanation:
The greenhouse effect is caused by heat trapping pollution in the atmosphere.
If you walk for 1.5 hours at an average speed of 4 miles/hr. How far will you have walked?
How does the strength of a magnetic field around a wire vary?
Answer:
By pointing one's right thumb along the direction of the current, the direction of the magnetic field can by found by curving one's fingers around the wire. The strength of the magnetic field depends on the current I in the wire and r, the distance from the wire.
The ratio of the speed of light in a medium to the speed of light in a vacuum
is called its:
A. angle of incidence
B. Snell's Law
C. angle of refraction
D. refractive index
Answer:D.Refractive Indez
Explanation:
It is usually expressed the other way: the ratio of the speed of light in a vacuum to the speed of light in a medium. In that case, it is called the "index of refraction".
You're going for "refractive index", but you've got the ratio flipped over.
A high diver dives off a platform and strikes the water 1.857 seconds later. Ignoring air resistance, how fast is he traveling as he strikes the water in m/s?
Answer:
The (vertical) speed of the driver as he strikes the water is approximately 18.22 m/s
Explanation:
From the parameters given in the question, we have;
The time after which the driver strikes the water after he drives off a platform, t = 1.857 s
Let 'v' represent the vertical speed of the driver
We can find the vertical speed of the vehicle as it strikes the water as follows;
v = u + g·t
Where;
v = The final vertical velocity of the driver
u = The initial vertical speed of the driver = 0 m/s
g = The acceleration due to gravity ≈ 9.81 m/s²
t = The time of motion = 1.857 seconds
Therefore, we have;
v = 0 + 9.81 m/s² × 1.857 s = 18.21717 m/s
Therefore;
The vertical speed of the driver as he strikes the water, v ≈ 18.22 m/s
Please answer correctly
No trolling or links, please
Answer: Wave a the first answer is right
Brainliest.
Explanation:
PLZZZZ HELPPPPPP MEEEEEE!!!!!! ILL GIVE 20 POINTS AND BRAINLIEST!!!
:'(
I am desperate guys.
Answer:
c.
Explanation:
In positron emission, also called positive beta decay (β+-decay), a proton in the parent nucleus decays into a neutron that remains in the daughter nucleus, and the nucleus emits a neutrino and a positron, which is a positive particle like an ordinary electron in mass but of opposite charge.
Does this help? Sorry it's wordy that's just how my teachers taught me :'(
1. Find the current in a circuit where the voltage is 9 volts and the resistance is 4 ohms.
a. 36 amps
b. 2.25 amps
c. 2 amps
d. 18 amps
2. Find the current in a circuit where the voltage is 120 volts and the resistance is 4 ohms.
a. 3 amps
b. 240 amps
c. 30 amps
d. 480 amps
3. Find the voltage in a circuit where the current is 10 amps and the resistance is 12 ohms.
a. 1.2 volts
b. 60 volts
c. 0.83 volts
d. 120 volts
4. Find the voltage in a circuit where the current is 3 amps and the resistance is 3 ohms.
a. 1 volt
b. 9 volts
c. 0 volts
d. 120 volts
5. Find the resistance in a circuit where the current is 10 amps and the voltage is 120 volts.
a. 130 ohms
b. 1200 ohms
c. 12 ohms
d. 110 ohms
6. Find the resistance in a circuit where the current is 20 amps and the voltage is 120 volts.
a. 6 ohms
b. 12 ohms
c. 240 ohms
d. 100 ohms
what type of beetle is this?
Sound waves travel fastest through
Group of answer choices
water
air
a vacuum
steel
Answer:
Solids: Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. In fact, sound waves travel over 17 times faster through steel than through air.
Explanation:
Answer:
option number 3
a vaccummm
Simplify 45÷3+2×8-12+42
Answer:
Explanation is in the picture and the answer is 16
if a car has 3000 j of kinetic energy,how much PE does it have when it reached the top of a hill
Answer:
3000 ke
Explanation:
20 points y'all it's urgent
As a light’s intensity decreases...
a. its amplitude increases
b. its amplitude decreases
c. its wavelength decreases
d. its wave speed decreases
Answer:
There is an inverse relationship between distance and light intensity - as the distance increases, light intensity decreases. This is because as the distance away from a light source increases,..
Explanation:
The light intensity decreases as magnification increases. There is a fixed amount of light per area, and when you increase the magnification of an area, you look at a smaller area. So you see less light, and the image appears dimmer. Image brightness is inversely proportional to the magnification squared.
A combination of two identical resistors connected in series has an equivalent resistance of 10. ohms. What is the equivalent resistance of the combination of these same two
resistors when connected in parallel?
Answer:
2.5
Explanation:
The equivalent resistance of the combination of the two same
resistors when connected in parallel is 0.4 ohms.
What is series and parallel connection of resistor?There are two types of connection of resistor-
In the series connection of resistor, the resistor are connected end to end in the circuit. The equivalent resistance for series connection of resistor is calculated with the following formula.[tex]R_{eq}=R_1+R_2+....R_n[/tex]
In the Parallel connection of resistor, the resistor are connected parallel in the circuit and the terminals of all resistor is connected to same nodes. The equivalent resistance for parallel connection of resistor is calculated with the following formula.[tex]R_{eq}=\dfrac{1}{R_1}+\dfrac{1}{R_2}+....\dfrac{1}{R_n}[/tex]
A combination of two identical resistors connected in series has an equivalent resistance of 10 ohms. As these two resistor has the same resistance, say (R). Thus,
[tex]R_{eq}=R+R10=2R\\R=5\rm\; ohm[/tex]
Equivalent resistance, when connected in parallel, is,
[tex]R_{eq}=\dfrac{1}{R}+\dfrac{1}{R}\\R_{eq}=\dfrac{1}{5}+\dfrac{1}{5}\\R_{eq}=\dfrac{2}{5}\\R_{eq}=0.4\rm\; ohm[/tex]
The equivalent resistance of the combination of the two same
resistors when connected in parallel is 0.4 ohms.
Learn more about the series and parallel connection of resistor here;
https://brainly.com/question/466269
An object is travelling 15 m/s. How long does it take for it to go 75 m?
Answer:
5 seconds
Explanation:
in the circuit diagram below on voltmeter V2 is 12V and the reading on ammeter A1 is 2A
calculate the amount of charge that flows through ammeter A1 in 120 second
Answer:
q = 240 C
Explanation:
The current passing through a circuit is defined as the amount of charge passing through that circuit per unit of time. Hence, the current can be calculated through the following formula:
[tex]I = \frac{q}{t}\\\\q = It[/tex]
where,
q = total amount of charge = ?
I = current = 2 A
t = time = 120 s
Therefore,
[tex]q = (2\ A)(120\ s)\\[/tex]
q = 240 C
hence, the force needed to accelerate the 1000kg car by 3m/s2 is 3000N
Answer:
i'll answer your question but follow me first
How does magnetic compass help to identify directions
Answer:
By the help of magnetic field of the earth
Explanation:
Compasses, also known as magnetic compass, help us primarily in navigating and determine position on the globe. The planet Earth has its own magnetosphere or magnetic field that is close with that of a magnetic poles, and this is how compass works. The compass needle aims north and south as it happens to coincide with the Magnetosphere or magnetic field.
help me please!
Which cause of eustatic sea-level changes leads to regressive sedimentary sequences?
A. land ice melting
B. seafloor spreading
C. thermal expansion
D. salt buildup
write your opinion about achievement made by during rana rule
Answer:
Your opinion about achievement made by during rana rule
Explanation:
April Fools !
1. Oh no! Your car breaks down on the highway, and you have to push the car to the side of the road. If your car is 400 kg and you push
with a force of 200 N, what is the car's acceleration?
O 2 m/s2
O 8.0 x 104 m/s2
O 0.5 m/s2
Oom/?
A 60 Watt bulb runs for 60 s. How much work does it do?
A car goes from a speed of 10m/s to 30m/s over 4s. If the car has a mass of 1000kg, How strong is the force pushing the car forward?
Answer:
i think ww
Explanation:
i think we need to calculate net force which is:
net force=m.a
..nf=1000kg×30m/s
therefore net force will be the answer you get whwn you multiply those two
Light waves Group of answer choices are not electromagnetic radiation. do not require a medium. can not travel in a vacuum. do not travel in straight lines from the source.
Answer:
do not require a medium
Explanation:
Light waves can be regarded as electromagnetic waves and it transverse in nature, no medium material is required to pass through. Light wave can travel through vacuum and it's ray can travel in straight lines even from point source. Light convey energy in perpendicular direction to electric field as well as magnetic field.
A glass falls from a table top and smashes on the floor 0.6 seconds later. How high is the table?
Equations that can be used
Vv=gt, dv=1/2gt^2, t=2d/g.
Answer:
1.8 m
Explanation:
Given: Glass falls from a table, smashes 0.6 seconds later
To find: How high a table is
Formula: Vv=gt, dv=1/2gt^2, t=2d/g
Solution: A table's height is measured from the top of the edge down to the floor. The tables are shown both have a height of 30 inches, which is common for many tables.
Data
t = 0.6sg = 9.81 m/s²d = ?Equation
d = [tex]\frac{1}{2}[/tex][tex]gt[/tex]²Math & Units
d = 4.905 (0.6²)d = 442.676Hence the table is 1.8 m high