An 85-kg jogger is heading due east at a speed of 2.0 m/s. A 55-kg jogger is heading 32° north of east at a speed of 3.0 m/s. Find the magnitude and direction of the sum of the momenta of the two joggers.
Electricity: Rotating rod with angular velocity around the axis. What is the potential difference across the rod?
See attached file for full problem description. Electricity: Rotating rod with angular velocity around the axis. What is the potential difference across the rod?
.See attached file for full problem description
A wheel starts from rest and rotates about its axis with constant angular acceleration. After 6.8 seconds have elapsed, it has rotated through an angle of 25 radians. A) What is the angular acceleration of the wheel? B) What is the angular velocity when the time t = 6.8 seconds? C) What is the centripetal acceleration of
What is the average angular velocity of each of the three hands of a clock? I believe the answer is ω; (second hand) = 0.105 rad/s, ω; (minute hand) = 1.75 x 10^-3 rad/s, ω; = (hour hand) = 1.45 x 10^-4 rad/s. I need to see each step and formula to solve this question.
A ball thrown downward at 2.32 m/s from a height of 1.07 meters above the floor bounces up to a height of 1.34 meters. Is the collision with the floor elastic?
Which is greater, the momentum of a 1645-kg Cadillac De-Ville traveling at 32 km/h or a 1601-kg Mazda Miata traveling at 47 km/h? I believe the Mazda is greater. I need to see each step and formula to solve this question.
A) What is the momentum of a 109-kg football player running at a top speed of 9.86 m/s? B) What is the momentum of a 9.72-gram rifle bullet traveling at 728 m/s? I need to see each step and formula to solve these questions.
The vaporization velocity in proportion to the surface area at a water droplet of spherical. Find the radius of a water droplet as the function of time when the density is uniform always.
(See attached file for full problem description) --- Learning Goal: To derive the formulas for the major characteristics of motion as functions of time for a horizontal spring oscillator and to practice using the obtained formulas by answering some basic questions. A block of mass m is attached to a spring whose spring cons
Please help answer the following questions. Provide step by step calculations for each. It has been argued that power plants should make use of off-peak hours (such as late at night) to generate mechanical energy and store it until it is needed during peak load times, such as the middle of the day. One suggestion has been to
A sphere of mass M and radius R is falling in a viscous fluid. How is the terminal velocity related to R ?
* degree mode Please view attachment 10. Two circus elephants, Bessie and Maybelle, are dragging a large container, as shown below. If Bessie pulls with a force of 2200 lbs. and Maybelle with a force of 1500 lbs, and the container moves along the dashed line, what is the angle? The container is behind both Bessie and Mayb
A boy / girl (you choose!) throws a ball straight up with a velocity of 35.0 m/s. a. How high is the ball when its velocity has slowed to 22.5 m/s? b. How high is the ball when its velocity is -22.5 m/s? c. What is its velocity when it is caught at the same height as when it was released? d. What is the maximum heigh
Merry-Go-Round. Two identical twins, Jena and Jackie, are playing one December on a large merry-go-round (a disk mounted parallel to the ground on a vertical axle through its center) in their school playground in northern Minnesota. Each twin has a mass of m. The icy coating on the merry-go-round surface makes it frictionless. T
On the center photo of page 43 measure the distance between the two images nearest the 20 cm position of the larger, heavier ball on the left. Use bottom to bottom measurements as shown in a previous figure. Repeat for the two images nearest the bottom left of the photo on page 43. Scale these distances to actual displacement
If a pitcher threw a ball horizontally at 101.0 mph, how far would it fall vertically by the time it reached home plate, 60.5 ft away? A daredevil jumps a canyon with walls of equal height and 10 m apart. He takes off by driving a motorcycle off a short ramp sloped at an angle of 15 degrees. What minimum speed must he have in
A dockworker applies a constant horizontal force of 80.0 N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 11.0 m in 5.00 s. a) What is the mass of the block of ice? b) If the worker stops pushing at the end of 5.00 s, how far does the block move in th
Please solve each problem step by step giving solutions please. SHOW every equation used and every step getting to the answer. Show substitutions, etc. Please give units. On problem 3 show position versus time diagrams and velocity versus time diagrams please! Look below for one page. The 1st attachment has problem 1 and 2
A MASS OF 0.2 KG IS ATTACHED TO A SPRING HAS A PERIOD OF VIBRATION OF 3.0 SECONDS WHAT IS THE FORCE CONSTANT OF THE SPRING? AND IF THE AMPLITUDE OF VIBRATION IS 0.010M WHAT IS THE MAX VELOCITY?
If a whale swims due east for a distance of 7.4 km, turns around and goes due west for 3.1 km and then turns around again and heads 3.6 km due east how do you figure out the total distance traveled by the whale?
(See attached file for full problem description with symbols and diagrams) --- Consider a string of total length , made up of three segments of equal length. The mass per unit length of the first segment is , that of the second is , and that of the third . The third segment is tied to a wall, and the string is stretched by
In a race over a distance s, runner A starts from rest and accelerates at a1 for the first distance x and then runs at constant speed. Runner B starts from rest and accelerates at a2 for the first distance x and then runs at constant speed. Runner A begins running as soon as the race begins but B first takes a nap to rest up.
Q) You dip your finger into a pan of water twice each second, producing waves with crests that are separated by 0.18m. a) Find the frequency of these water waves in Hertz. b) Find the period of these water waves in units of seconds. c) Find the speed of these water waves in m/s.
1) A plane flies 485 km away from its base at 708 m/s, then flies back to its base at 1062 m/s. What is the average speed in m/s? 2) See attachment and solve problems 15 - 17.
Kinematics: Velocity of a car driving 7 hours at 46km/h then 7 hours at 69km/h, Recon plane, and Electron in a TV.
Please use step by step solutions with answers and show equations used. Please show every step no matter how minor please. 1)You drive a car 7 hours at 46kmh then 7 hours at 69kmh. What is your average velocity? Answer in km/h. 2) What is your average velocity if you drive a distance of 402.5 km at a speed of 46 km/h, t
A liquid flows through two horizontal sections of tubing joined end to end. The cross sectional area, flow speed and pressure in the first tubing is given. The cross sectional area of the second tubing is given. To calculate the flow speed and pressure in the smaller section.
A liquid with a density of 1.37*10^3 kg/m^3 flows through two horizontal sections of tubing joined end to end. In the first section, the cross sectional area is 10.4cm^2, the flow speed is 276cm/sec, and the pressure is 1.42*10^5 Pa. In the second section, the cross sectional area is 2.71cm^2. a) Calculate the flow speed in
How long is the electron in the accelerating region? Answer in units of s. A rocket driven sled running on a straight level track has been used to study the physiological effects of large accelerations on astronauts. One such sled can attain a speed of 408m/s in a 1.6 starting from rest. What is the acceleration of the sled,
I have a question and an answer, but It does not make sense to me, unless I have figured out the wrong answer. Please help! There are 3 golf clubs with long handles with an angled faces, 70, 60 and 48 degrees. The clubs all hit the ball with the same amount of force, which club gives the greatest horizontal velocity? A =
Please help to explain the following graphs & questions in attachment. An object of mass is attached to a vertically oriented spring. The object is pulled a short distance below its equilibrium position and released from rest. Set the origin of the coordinate system at the equilibrium position of the object and choose upward