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3 years ago

The sentence Walking the wire, my dog waited for the squirrel to fall is an example of _____.

1 answer:

8 0

The answer is dangling participle. The dog wasn't walking the wire, the squirrel was. It is modifying the wrong noun.

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4. Calculate the kinetic energy of a 4.7 kg object moving at a speed of 7 m/s. SHOW YOUR WORK

SashulF [63]

Answer:

$\boxed {\boxed {\sf 115.15 \ J}}$

Explanation:

Kinetic energy is the energy an object possesses due to motion. It is calculated with the following formula.

$E_K= \frac{1}{2} mv^2$

The mass of the object is 4.7 kilograms. The velocity of the object is 7 meters per second.

m= 4.7 kg
v= 7 m/s

Substitute the values into the formula.

$E_K= \frac{1}{2} (4.7 \ kg)(7 \ m/s)^2$

Solve the exponent.

(7 m/s)²= 7 m/s * 7 m/s = 49 m²/s²

$E_K= \frac{1}{2} (4.7 \ kg)(49 \ m^2/s^2)$

Multiply the numbers together.

$E_K = 2.35 \ kg * 49 \ m^2/s^2$

$E_K= 115.15 \ kg*m^2/s^2$

Convert the units. 1 kilogram square meter per square second is equal to 1 Joule.

$E_K= 115.15 \ J$

The object has <u>115.15 Joules</u> of kinetic energy.

3 0

2 years ago

Read 2 more answers

Apollo 14 astronaut Alan B. Shepard Jr. used an improvised six-iron to strike two golf balls while on the Fra Mauro region of th

Illusion [34]

Complete Question

Apollo 14 astronaut Alan B. Shepard Jr. used an improvised six-iron to strike two golf balls while on the Fra Mauro region of the moon’s surface, making what some consider the longest golf drive in history. Assume one of the golf balls was struck with initial velocity v0 = 32.75 m/s at an angle θ = 32° above the horizontal. The gravitational acceleration on the moon’s surface is approximately 1/6 that on the earth’s surface. Use a Cartesian coordinate system with the origin at the ball's initial position.

Randomized Variables

vo 32.75 m/s

theta 32 degrees

What horizontal distance, R in meters, did this golf ball travel before returning to the lunar surface?

Answer:

The horizontal distance is $R = 590.2 \ m$

Explanation:

From the question we are told that

The initial velocity is $v_o = 32.75 \ m/s$

The angle is $\theta = 26^o$

The gravitational acceleration of the moon is $g_m = \frac{1}{6} * 9.8 = 1.633 m/s^2$

Generally the distance traveled is mathematically represented as

$R = \frac{v_o^2 sin 2(\theta)}{g_m}$

=> $R = \frac{32.75^2 sin 2(32)}{1.633}$

=> $R = 590.2 \ m$

8 0

3 years ago

What is the meaning of velocity?

masha68 [24]

Velocity is the displacement of an object over the amount of time. It is not the same as speed. If an object travels 4 miles forward and then 4 miles back all in one hour, its speed is 8 mph. However, displacement is the difference between the final position and the initial position. So in this case, the average velocity would be 0 because its final and initial positions were the same.

6 0

4 years ago

Studying more difficult subjects first is an effective study habit because

omeli [17]

Answer:

easier topics require less time to review

Explanation:

7 0

3 years ago

A titanium bicycle frame displaces 0.314 l of water and has a mass of 1.41 kg.part what is the density of the titanium in g/cm3

nlexa [21]

Answer;

= 4.49 g/cm³

Explanation;

Density = Mass / Volume

mass = 1.41 kg,

volume = 0.314 L

but; 1 kg = 1000 g and 1 L = 1000 mL

Thus;

Density = 1.41 kg/0.314L

Density = 4.49 kg/L (1000g/ 1kg)(1L/1000cm^3)

Density = 4.49 g/cm^3

4 0

3 years ago