NEED HELP ASAP WILL GIVE 40 POINTS TO WHO GIVES RIGHT ANSWER

Find the distance traveled of a car that has a constant speed of 30 m/s and travels for 60 s. Use: d = v t

Answer: D

Explanation: The weather is making the Bits of rock and the glaciers are moving it so that is weathering.

Answer:

5.06 m/s

Explanation:

velocity = distance / time

             = ( 25.6 - - 14.4) / 7.90 = 5.06 m/s

Answer:

40.92 m/s

Explanation:

The computation is shown below:

Ek = 1 ÷2mv²...............................(1)

v = √(2Ek/m).......................... (2)

Here EK denotes kinetic energy

m denotes mass

v denotes velocity

Given that

m = 0.25kg and Ek = 209.3J

So,

v = √(2×209.3 ÷0.25)

= √1674.4

= 40.92 m/s

The jet of water emerges with a speed v horizontally. Then, it falls a vertical distance of 1.58, and during the time of its fall until it hits the ground, it travels a distance of 0.586 meters.

Since the water moves according to the Projectile Motion formulas, the horizontal motion is uniform and the vertical motion is uniformly accelerated from rest.

Then, we can use the vertical distance to find the time that it takes for the water to reach the ground. Then, divide the horizontal distance traveled by the water by the time it took for the water to fall to find the horizontal speed of the water.

Finally, use Torricelli's Theorem to relate the height of the water above the hole in the pipe to the horizontal speed. Find the height of the hole by isolating it and replacing the value of the known variables.

Step 1: Time

Since the water falls from rest a distance of 1.58m, and the time it takes for an object to fall a distance d in free fall from rest is given by:

Then, replace d=1.58m and the value of the acceleration of gravity g=9.81m/s^2 to find the time it takes for the water to fall:

Step 2: Speed

Since the water travels a horizontal distance of 0.586m during that time, then, the speed of the water jet as it emerges from the hole, is:

Step 3: Height (Torricelli's Theorem)

According to Torricelli's Theorem, the speed of a liquid jet emerging from a hole located a distance h below the level of water of a large container, is:

Isolate h from the equation:

Replace v=1.032496477...m/s and g=9.81m/s^2 to find the height of the water above the hole in the tank:

Write the answer in cm:

Therefore, the height of the water above the hole in the tank is 5.43 centimeters.

The velocity of the second ball just after it is struck is 15.15 m/s.

To solve this problem, follow these steps:

1. Calculate the initial velocity of the cue ball using the impulse-momentum theorem:
Impulse = Change in Momentum
Impulse = m * (v_f - v_i)
+2.50 N⋅s = 0.165 kg * (v_f - 0 m/s)

2. Solve for v_f (initial velocity of the cue ball):
v_f = Impulse / m
v_f = 2.50 N⋅s / 0.165 kg
v_f = 15.15 m/s

3. Since the collision is elastic and the masses are equal, the first ball comes to a stop and transfers all its velocity to the second ball. Therefore, the final velocity of the second ball is equal to the initial velocity of the cue ball.

So, the velocity of the second ball just after it is struck is 15.15 m/s.

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The measured variable is the measurement device's output. Option A.

The physical quantity or attribute being measured and recorded by the measurement device is referred to as the measured variable. Temperature, pressure, voltage, current, or any other quantifiable quantity could be used.

Changes in the measured variable are sensed or detected by the measurement device and converted into a form that may be displayed, recorded, or processed.

The feedback signal is basically a signal that is used to control and regulate the system output. There is a very big difference between the measured variable and signal feedback as a result. As a result, the right answer is A.

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Answer:

No and yes it's like a 30%or 20%

Explanation:

"researchers say that there is no proof that dimples are inherited."

meaning that if the mom or dad had dimples it might have a chance or no since a dominant trait not a recessive trait

Answer:

A

Explanation:

what more to say.. :| it's the distance from x to a crest or trough

Answer:

The answer is A

Explanation:

The amplitude of wave is the distance the wave moves in one second

Answer:

3amperes

Explanation:

current = voltage ÷ resistance = 90÷30= 3amperes

The current Flows In the circuit​ if, a resistance of 30 ohms is placed in a circuit with a 90-volt battery, is 3 Ampere.

The obstruction to current flow in an electrical circuit is measured by resistance. The Greek letter omega represents the unit of measurement for resistance, known as ohms. Georg Simon Ohm (1784–1854), a German physicist who investigated the connection between voltage, current, and resistance, is the name given to the unit of resistance.

Given:

The resistance of the circuit, R = 30 ohms,

The voltage in the battery, V = 90 volts,

Calculate the current using Ohm law as shown below,

The current of the circuit = The voltage in the battery / The resistance of the circuit,

The current of the circuit = 90 / 30

The current of the circuit = 3 Ampere,

Thus, the current of the circuit having a battery of 90 volts is 3 Ampere.

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The end of the a thin rod with a length of 0.452 m and very little mass is moving up the plane at an acceleration of 0.80 m/s2 whereas the rod is horizontal.

The speed of an object in rotation is known as its angular speed. In radians, the distance traveled is denoted by the symbol. The amount of time is expressed in seconds. As a result, the angular speed is expressed in radians per second, or rad/s.

A scalar measurement of the rotating item is its angular speed. A vector representation of the rotational motion is the angular velocity. Only the magnitude of an angle's speed is specified. The magnitude and direction are both specified by angular velocity.

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Answer: Gravity causes a change in the mass of objects on earth and the moon.

Explanation:

Because of gravity, the weight of objects lessen, and decrease because of gravity. If you were to drop an object from earth from space, the object would have more mass. Hope that helps.

IMA=ideal mechanical advantage = output force : input force

7 = 280 : input force

input force = 40 N

Answer:

Distance = 3480m/s²

Explanation:

\(d = vt \\ v = 29 \\ t = 2 \: min= 120 seconds \\ d = 29 \times 120 \\ d = 3480\)

speed = distance ÷ time

29=distance ×2

2×29= distance

58= distance

so,

distance is 58 meters

As we look at larger and larger scales in the universe, we find C) a larger and larger percentage of the matter is dark. This is because dark matter makes up approximately 85% of the total matter in the universe, while visible matter only accounts for about 15%.

This is because dark matter does not interact with light, making it difficult to detect using traditional methods. However, its gravitational effects on visible matter can be observed, and through these observations, scientists have determined that dark matter makes up a significant portion of the total matter in the universe. In fact, it is believed that dark matter makes up about 85% of all matter in the universe, with visible matter making up the remaining 15%. Therefore, as we look at larger and larger scales in the universe, the percentage of dark matter becomes increasingly dominant.

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Explanation:

Qualitative is to observe and note a quality about something - like the paper airplanes are made out of "white" paper. White is a qualitative property.

Quantitative is to observe and measure a value - like the time of flight of a paper airplane.

the answer is "all organisms evolve at the same rate" :)

Answer:

answer is b

Explanation:

Answer:

answer is b. any movement that uses your muscles and requires energy

Explanation:

In order to avoid injury to driver, The force constant of this spring should be 73.82 N/m

Calculation of force constant to this spring:

Here  

vertical drop is 15 m.

mass of the car, m= 113 kg

gravitational acceleration, g= -9.8 m/s^2

spring compression before car stops, x= 3.0 m

In order to avoid injury to the driver,

we need to use Hooke's law and Newton's second law:

F(net) = F(x)

m*a=-k*x

here a=g

k= -(m*g) / x

here k is force constant of this spring

substituting the values we get,

k = -(113* -9.8) / (15)

k = 73.8266 N/m

Hence,  the force constant of this spring should be 73.82 N/m

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Answer:

C and D

Explanation:

A: is a simple composition

B: is a single replacement

C: C is a double displacement

D: is a double replacement

Answer:

The answers are C abd D.

Explanation:

Here,

A no. Is a combination or analysis chemical reaction.

B no.is a single displacement reaction as cl2 goes to zn.

C no. Is double displacement reaction.

D no. Is a double displacement reaction.

Hope it helps.....

Answer:

1080 m

Explanation:

Divide 5400 over 5.0

The two capacities in which engine oil is sold are large and small. The large can contain more oil than the small can.

Engine oil is essential for the maintenance and longevity of your vehicle's engine. It is sold in two capacities: large and small. The amount of oil required depends on the engine's size and other factors.Large cans usually contain 5 quarts or more of oil, whereas small cans typically contain 1 quart or less of oil. However, the specific amount of oil in each can may vary depending on the brand and manufacturer. It's important to check your vehicle's owner's manual to determine the correct type and amount of oil to use for your engine. Additionally, always make sure to dispose of used oil properly, as it can be harmful to the environment if not disposed of correctly.

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Children then older people getting sick. Organic farming is a method of growing food crops with natural alternatives to chemical pesticides.

Answer:

The history of Asian art includes a vast range of arts from various cultures, regions and religions across the continent of Asia. ... Central Asian art primarily consists of works by the Turkic peoples of the Eurasian Steppe, while East Asian art includes works from China, Japan, and Korea.

The Evolution of Asian Art

History marks the beginning with Hindu and Buddhist art around the 5th century BCE. These ancient religions were largely represented by an introspective way of life, and their followers adorned their temples with elaborately carved walls and stone statues.

The missile is flying at an altitude of approximately 124.22 ft above the ground.

The altitude at which the missile is flying, we need to calculate the distance between the ground and the Mach wave generated by the nose of the missile.

Let's assume that the speed of sound at the given altitude is 1116 ft/s (which is approximately the speed of sound at sea level).

The formula to calculate the distance between the ground and the Mach wave is:

\(\(d = \frac{M^2}{\sqrt{M^2 - 1}} \cdot h\)\)

Where:

\(\(d\)\) = Distance between the ground and the Mach wave

\(\(M\)\)= Mach number of the missile

\(\(h\)\) = Altitude of the missile above the ground

In this case, the Mach number of the missile is 1.5, and the distance between the ground and the Mach wave \(\(d\)\) is given as 559 ft. Let's substitute these values into the formula and solve for\(\(h\)\):

\(\(559 = \frac{1.5^2}{\sqrt{1.5^2 - 1}} \cdot h\)\)

\(\(559 = \frac{2.25}{\sqrt{2.25 - 1}} \cdot h\)\)

\(\(559 = \frac{2.25}{\sqrt{0.25}} \cdot h\)\)

\(\(559 = \frac{2.25}{0.5} \cdot h\)\)\(\(559 = \frac{2.25}{\sqrt{2.25 - 1}} \cdot h\)\)

\(\(559 = 4.5 \cdot h\)\)

Now, we can solve for \(\(h\)\):

\(\(h = \frac{559}{4.5}\)\)

\(\(h \approx 124.22\) ft\)

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