In a chemical reaction, the mass of the reactants is 13,3 grams. Which of the

What do the length of the cord and gravity determine for a pendulum?

rusak2 [61]

Answer: C

Period/ Period of the pendulum.

Content:

Simple pendulum is a small diameter bob which is suspended from light cord or string. The string is strong enough to stretch.

Pendulums are quiet common in use such as clocks, swings etc.,

From the simple pendulum we can find conditions under which it performs simple harmonic motion and we can also derive the expressions for Period of pendulum, frequency etc.

Period of a pendulum/Time period is given by the following expression

 T =2π.√(L/g) seconds 

 T = period of pendulum in seconds

L = Length of the string/cord in meters

g = gravitational force in m/s² ( g = 9.8 m/s² )

Period of pendulum is independent on mass of the bob.

So, The relation between length of the cord and gravity is used to determine the period of pendulum

4 0

3 years ago

A baseball has a momentum of 6.0 kg m/s south and a mass of 0.15 kg. What is the baseball’s velocity? Show work

kupik [55]

Momentum of an object is defined as product of mass and velocity

so it is given as

$P = m* v$

here it is given that

mass = 0.15 kg

momentum = 6 kg m/s

so by plug in values in the above equation

$6 = 0.15 * v$

$v = \frac{6}{0.15}$

$v = 40 m/s$

so its speed will be 40 m/s

6 0

3 years ago

Even, in 1921, the Dodge Brothers built a boat named the SS Delphine and it had a whopping 3000 HP. So, how much horsepower woul

satela [25.4K]

Answer: I am getting a result around the 54,800 area, so I am selecting the 55,000 HP answer.

7 0

3 years ago

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A runner is jogging in a straight line at a

Fiesta28 [93]

Answer:

Total distance traveled by bird is 10.5 km.

Explanation:

Given that,

Velocity of runner= 8.4 km/hr

Distance = 6.3 km

Velocity of bird = 42 km/hr

Suppose, How far does the bird travel?

We need to calculate the time of bird

Using formula of time

$t=\dfrac{d}{v_{b}}$

Put the value into the formula

$t=\dfrac{6.3}{42}$

$t=0.15\ hr$

We need to calculate the distance runner travels during time period

Using formula of distance

$d=v_{r}\times t$

$d=8.4\times0.15$

$d=1.26\ km$

We need to calculate the distance of runner to FL

Using distance

$d'=6.3-1.26$

$d'=5.04\ km$

We need to calculate the net closing speed between runner and bird

Using speed

$v'=v_{r}+v_{b}$

$v'=8.4+42$

$v'=50.4\ km/hr$

We need to calculate the time for runner and bird to meet

Using formula of time

$t=\dfrac{d}{v'}$

Put the value into the formula

$t=\dfrac{5.04}{50.4}$

$t=0.1\ hr$

We need to calculate the distance covered by runner

Using formula of distance

$d=vt$

Put the value into the formula

$d=8.4\times0.1$

$d=0.84\ km$

We need to calculate the distance covered by bird to runner

Using formula of distance

$d=vt$

Put the value into the formula

$d=42\times0.1$

$d=4.2\ km$

We need to calculate the total distance

Using distance

$D=6.3+4.2$

$D=10.5\ km$

Hence, Total distance traveled by bird is 10.5 km.

4 0

3 years ago

A stone is dropped from the upper observation deck of a tower, 950 m above the ground. (assume g = 9.8 m/s2.) (a) find the dista

sergey [27]

d = 950 m - 4.9t^2 m The distance an object moves under constant acceleration is d = 0.5at^2 where d = distance a = acceleration t = time. Since we're falling and since we're starting at 950 m above ground, the formula becomes: d = 950 m - 0.5at^2 Substituting known values, and simplifying gives us d = 950 m - 0.5*9.8 m/s^2 * t^2 d = 950 m - 4.9 m/s^2 * t^2 Since time is in seconds, we can cancel out the seconds in the units, getting d = 950 m - 4.9t^2 m

8 0

3 years ago

Read 2 more answers