The hammer throw is a track-and-field event in which a 7.30-kg ball (the hammer) is whirled around in a circle several times and released. It then moves upward on the familiar curved path of projectile motion and eventually returns to the ground some distance away. The world record for the horizontal distance is 86.75 m, achieved in 1986 by Yuriy...
angular acceleration vector of the dumbbell with respect to todinate system that is specified? What is its magnitude? 6. (3 points) Chloë loves her rocket shoes! I investigated whether it would be safe to buy her some actual rocket shoes. To do this, I modelled Chloë as a vertical uniform bar of length L I modelled the rocket shoes as...
To remind you, in Physics 101 you learned that the momentum ~p of an object with mass m traveling with velocity ~v is given by ~p = m~v. The magnitude of the momentum of a photon has been found to be given by |~pphoton| = h/λ, where h is Planck’s constant and λ is the photon’s wavelength. The direction of...
Please answer both based on the graph 11. What is the average acceleration of the particle from t 0s to 8 ? 12. What is the instantaneous acceleration at t 2 s? Use the graph below for questions 11 15 Velocity versus Time 10 3 123 456 78 9 10 Time (s)
While standing on a bridge 30.0 m above the ground, you drop a stone from rest. When the stone has fallen 5.00 m, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same instant? Take the downward direction to be the negative direction.
An electron is initially at rest in a uniform electric field having a strength of 1.8 x 106 V/m. It is then released and accelerated by the presence of the electric field. Part (a) What is the change in the electron's kinetic energy, in kiloelectron volts, if it travels over a distance of 0.275 m in this field? Part (b) Over how...
A rigid, massless rod has three particles with equal masses attached to it as shown in Figure P8.59. The rod is free to rotate in a vertical plane about a friction-less axle perpendicular to the rod through the point Pand is released from rest in the horizontal position at t - 0. Assuming m and d are known, find (a)...
13. R 0.8m Acceleration, M2 A massless string runs over a cog. C, of radius 0.8m. One end of the chain carries a mass of M1 40 kg. the other a mass of M2-25 kg. The mass of the pulley is 20 kg and its radius is 2.00 m 0 Label the tension in the chain supporting M1 as T1...
I know that the motion is non-uniform, but I am not quite sure how to solve for the average speed. Measuring Velocity 02 (Active-HTML5) Due this Friday, Jan 25 at 11:59 pm (EST) 10.01s get credit. Remember that you can click and drag the left mouse button to find the location of the cursor time interval between t-4.0s and t-6.0s?...
Sound is detected when a sound wave causes the tympanic membrane (the eardrum) to vibrate (see the figure (Figure 1)). Typically, the diameter of this membrane is about 8.40 mm in humans. a)How much energy is delivered to the eardrum each second when someone whispers (19.5 dB ) a secret in your ear? (in Joule) b)To comprehend how sensitive the...