Physics Questions and Answers

Please answer the following questions. Please elaborate and explain it profoundly. 1. Describe two ways to use a wrecking ball. 2. How can you relate Newton's laws on how a wrecking ball works? 3. ...

The cannon on a battleship can fire a shell a maximum distance of 29.0 km. (a) Calculate the initial velocity of the shell. _______ m/s (b) What maximum height does it reach? (At its highest, th...

Answer the following questions below. What will be the pah of the cannonball and how can the motion of the cannonball be described? Do not forget to answer the 3 guide questions below. Provide detaile...

Answer the problems below. Show solution and box the answer. Problem 1: A soccer ball is kicked horizontally off a 22.0-meter high hill and lands a distance of 35.0 meters from the edge of the hill...

Identify whether the statement is TRUE or FALSE. 1. A projectile is any object upon which the only force is gravity 2. Projectiles travel with a parabolic trajectory due to the influence of gravity?...

Answer the problems below. Show solution and box / encircle your answer. 1. A ball is thrown horizontally from the top of a 60.0-m building and lands 100.0 m from the base of the building. Ignore air ...

1. Describe the relationship between entropy and ability to do work. Be sure to include the terms, entropy, order, disorder, temperature, volume, and work in your answer. 2.Describe how Snell's Law...

1. What is magnetic induction? (a) an area surrounding a magnet in which a magnetic force acts on a moving charge (b) a piece of metal that has atoms aligned such that it attracts other pieces of me...

1. A 500 Ohm, 200 Ohm, and 300 Ohm resistors are all in series and connected to 100 V power supply. What is the potential difference across the 200 Ohm resistor? (a) 20 V (b) 100 V (c) 50 V (d) 30...

1. A square boat of area = 2 m2 floats on the water with 1 m of boat submerged in the water. Estimate the buoyant force on the boat and the pressure at the bottom of the boat. The density of water is ...

1. Write down at least 3 ways you can come up with white light by color addition. 2. Describe the difference between reflection of a mechanical wave about a free boundary, and a fixed boundary. Inc...

1. Explain Heisenberg's Uncertainty Principle. 2. Explain how you find the nuclear binding energy for an atom. 3. Write out generic mathematical expressions for current and potential diffe...

Find the distance and displacement for the following items. EASY LEVEL 1. A dog walks 12 meters to the north and then 16 meters back to the south. For this motion, what is the distance moved? What is ...

Answer the following word problems. Show your solution and use the appropriate unit. Illustration Solution for x and y components component per vector Magnitude of resultant (computation) Theta...

The video below talks about an expensive mistake of the National Aeronautics and Space Administration (NASA) that involves the simple concept of conversion of units. https://youtu.be/urcQAKKAAl0 In...

Urgent!!!. C. 9. The following graph shows Millikan's data for Vaop (V) determining the threshold frequency for a given material by varying the frequency of the incident 3 light. Which of the followin...

A car is traveling in the x direction with an initial velocity, v0 , and acceleration, a. * Write down the governing equations of motion (5 points) * Calculate the final velocity, v, and position, x, ...

You are analyzing an Atwood machine with masses m1 and m2 connected over a pulley by a massless unstretchable string. The left-hand mass, m1, rests on an inclined plane forming an angle q with the hor...

A diver runs off a horizontal pier of height h above the surface of the water with an initial velocity v0. For v0 = 3 m/s and h = 7m, calculate the following: the time in the air t the distance from t...

A projectile is launched with an initial position y0 = 0, initial velocity v0 and angle theta with respect to the x direction. Write down the governing equation of motion (5 points) For v0 = 50 m/s an...

A projectile is launched vertically with an initial position y0 = 0 and initial velocity v0. Write down the governing equation of motion (5 points) Calculate the maximum height y, the velocity at the ...

In the railroad freight yard, an empty freight car of mass m rolls along a straight level track at 1.30 m/s and collides with an initially stationary, fully loaded boxcar of mass 5.30 m . The t...

For a system of three particles moving along a line, an observer in a laboratory measures the following masses and velocities. What is the velocity of the CM of the system? Enter a positive value if t...

A baseball player pitches a fastball toward home plate at a speed of 41.0 m/s. The batter swings, connects with the ball of mass 165 g, and hits it so that the ball leaves the bat with a speed of 37.0...

An object of mass 4.40 kg is projected into the air at a 55.0° angle. It hits the ground 3.40 s later. Set "up" to be the positive y -direction. What is the y-component of the object's change in mo...

Mary applies a force of 74 N to push a box with an acceleration of 0.46 m/s 2 . When she increases the pushing force to 80 N, the box's acceleration changes to 0.74 m/s 2 . There is a cons...

A basketball player is running at 5.40 m/s directly toward the basket when he jumps into the air to dunk the ball. He maintains his horizontal velocity. (a)What vertical velocity (in m/s) does he ne...

Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 0.9 m/s and a mass of 0.39 kg. Cart 2 has a mass of 0.72 kg. (a) If the total momentum of the system is ...

1) Time is a) dependent on the observer b) absolute e) never changing c) the same for different observers d) simultaneous in all cases 2) The equation E = mc^2 illustrates that a) energy can be conver...

1. In Newtonian mechanics, the speed of light a) is 3 x 108m/s d) will be faster than c b) can be infinite e) none of the above c) will be slower than c 2. Simultaneous events in one frame of referenc...

Please answer the following. Multiple choice 1. In Newtonian mechanics, the speed of light a] is 3 x loamfs d) will be faster than c bl can be inﬁnite e} none ofthe above c} will be slower than c 2....

A car is moving at a rapid pace. It is approaching a garage with doors at either end. The proper length of a the car is longer than the garage. As the car travels through the garage, describe what the...

11. Electrochemistry is important in many aspects of daily life. Define voltaic cell . Fill in the blanks for the drawing of a voltaic cell that's made with copper/copper (II) nitrate (E° = 0.34 V)...

Explain what is meant by "field" and compare the properties of gravitational, electric, and magnetic forces in terms of particles affected, factors affecting the magnitude, and their relative strength...

An electron moves with an unknown velocity through a magnetic field of 1.56 T that points directly east. The electron experiences a force of 6.24 x 10^-15 N directly south. What is the magnitude and ...

By definition, the work done on a gas or liquid by a gas or liquid, is NOT: a) isovolumetric b) isotoner c) isothermal d) adiabatic A refrigerator lowers the temperature, or internal energy, of substa...

Which of the equations below regarding colors is correct? Choose all that apply. a) red = green + blue (light) b) black = cyan + magenta + yellow (pigment) c) white = red + green + blue (light) d) cya...

After two half-lives, how much of the original sample would remain? a) 6.25% b) 50% c) 25% d) 12.5% The half-life of Calcium-47 is 3.91 x 10^5 seconds. A sample contains 4.11 x 10^16 nuclei. How muc...

Exp1ain how the atomic model went from the billiard ball model to the plum pudding model? Which scientists influenced the progression of the atomic model? Check all that apply -Dalton -Rutherford -Boh...

That same 15 kg object is looked at by a human. The human is very strong and can apply a "psychic" force of 5000N. The human applies the 5000N force for 5 seconds and launches the object straight into...

4) A freight train consists of two 8.3 • 104 kg engines and 45 cars with average masses of 5.8 • 104 kg each . Randomized Variables m = 8.3 • 104 kg m2 = 5.8 • 104 kg f = 7.75?...

a. What happens to a window during a strong hurricane? Does it implode or explode and why? b. A large boulder is thrown into a deep lake. As it sinks deeper, does the buoyant force upon it decreases o...

Topic: Angular Momentum I have no clue how to figure these out. Please help me. What is the angular momentum for a 2kg ball being swung in a circle of radius 3m at a speed of 4 m/s? A 3 kg object is m...

Candace (sister to Phineas) has taken up pole-vaulting for her school track & field team. She approaches the takeoff point at a speed of 9.00 m/s, and we want to know how high she can vault. a. At...

Jumping from a 10 m high platform and hitting the water at a speed of 30 mph is a daunting enough prospect on its own. But when you have to throw in a series of somersaults and twists in between , and...

Phineas is driving a car down the street at a certin speed, he slams on the brakes, causing the car to immediately go into a skid. He comes to a stop 100 ft later. Ferb takes a turn driving the same b...

please help me .. and please make your writing easy to follow... thank you.. 5. A gyroscope wheel weighs 7.0 lb and has an effective radius of 4.0 in. It spins with its axis horizontal at a rate of 3,...

1) A cyclist gets on his bike. He pushes relatively hard on the pedal and begins his trip. Once he begins moving, he doesn't have to push quite so hard to move faster. For a while, he coasts without p...

You are going up in an elevator. Initially the elevator accelerates for 2.0 s to 6.0 m/s. Then it moves for 4.0 s, and then it stops uniformly in 3.0 s. What are the magnitudes of the normal forces ex...

Q1: A ball is thrown horizontally from the top of a 60m building and lands 100m from the base of the building. Ignore air resistance. What was the vertical component of the velocity just before it hit...

Serving at a speed of 170 km/h , a tennis player hits the ball at a height of 2.5 m and an angle θ below the horizontal . The service line is 11.9 m from the net, which is 0.91 m high . Part (a) ...

A rotating space station is said to create "artificial gravity"—a loosely-defined term used for an acceleration that would be crudely similar to gravity. The outer wall of the rotating space station...

During an ice show a 60.0 kg skater leaps into the air and is caught by an initially stationary 80.0 kg skater. a. What is their final velocity in meters per second assuming negligible friction an...

As shown in the figure below, a 2.25 kg block is released from rest on a ramp of height h An illustration shows a block positioned a height h at the top of the vertical portion of a curved ramp...

A man does 4,620 J of work in the process of pushing his 2.90 10 3 kg truck from rest to a speed of v , over a distance of 28.0 m. Neglecting friction between truck and road, determine ...

Hello, kindly please answer all the questions that I need help with it, thank you so much!! Before you answers the questions make sure all the answers are corrected, because I had a bad memory yesterd...

Michael pushes on the handle of a 12-kg lawn mower. The force of friction between the mower and the grass is 9 N. The handle makes a 35° angle with the horizontal. Michael wants to accelerate the mo...

A child pulls a 12.6 kg wagon across a level floor, causing it to accelerate at 7.5 m/s2. If the force of friction between the wheels and the wagon is 6.7 N, what is the force applied by the child? Re...

If a 5 N horizontal force is acting on a box and the box remains at rest, then the force of static friction must be ___________. Do not include the units in your answer or the computer will mark the ...

A cube of metal weighs 99.47 N and measures 0.19 m on each side. What is the density of the metal in kg/m3? Round your answer to the nearest whole number. Do not include the units in your answer or t...

A sphere of metal weighs 153.2 N in air. When placed in water, its weight is 59.2 N. What is the buoyant force? Using significant figures report your answer to 1 decimal place. Do not include the u...