Get college assignment help at uniessay writers A 30 g ball of clay traveling at speed hits and sticks to a 1.6 kg block sitting at rest on a frictionless surface. What is the speed of the block after the collision? Express your answer in terms of initial velocity using two significant figures. Part B What percentage of the ball’s initial energy is “lost”? Express your answer using two significant figures. =
A jet of water squirts out horizontally from a hole near the bottom of the tank in Figure P9.45. If the hole has a diameter of 3.40 mm, what is the height, h, of the water level in the tank?
A 280 g block on a 50 cm-long string swings in a circle on a horizontal, frictionless table at 70 rpm. What is the speed of the block? What is the tension on the string?
A car of mass m moving at speed v1 collides and couples with the back of a truck of mass 2m moving initially in the same direction as the car at a lower speed v2. a) What is the speed v1 of the two vehicles immediately after the collision? b) What is the change in kinetic energy of the car-truck system in the collision? (answer using symbols)
a 1.5-m cylinder of radius 1.10 cm is made of a complicated mixture of materials. It’s resistivity depend son the disatnace x from the left end adn obeys the formula p(x) = a bx^2, where a and b are constants. I need a hint how to set up this problem to solve for resistance of the cylinder from end to end. Know that R=p(L/A) – do I integrate the p(x)?
An Alaskan rescue plane traveling 30 m/s drops a package of emergency rations to a stranded party of explorers.the plane is traveling at a height of 200 m above the ground. what horizontal distance does the package fall before landing? find the velocity of the package just before it hits the ground.
A light string is wrapped around the outer rim of a solid uniform cylinder of diameter 75.0cm that can rotate without friction about an axle through its center. A 3.00kg stone is tied to the free end of the string, as shown in the figure . When the system is released from rest, you determine that the stone reaches a speed of 3.50m/s after having fallen 2.50m . What is the mass of the cylinder? I’ve calculated the acceleration=3.5^2=0^2 2a2.5 1)a=2.45 m/sec^2 Found the angular acceleration of the cylinder using 2)α=a/R=2.45/0.375=6.53 rad/sec^2 3)F(tension)=22.9N from mg-a 4)T=FR=22.9 x 0.375=8.59 5)I=8.59/6.53=1.32 6)I=1/2mR^2 m=1.32/0.5 x 0.375^2=18.77kg It seems to be a wrong answer and I cant find mistake in my calculations
An arrow is fired horizontally at a target 30 meters away. The bullseye is at the same level as the bow. The initial speed of the arrow is 50 m/s. How long does it take to get to the target? How far below the bullseye does it fall?
if you place a glass test tube in water you will be able to see the tube. If you place it in clear soybean oil, you may not be able to see it. What does this tell you about the speed of light in the oil and in the glass?
Light of wavelength 0.500 µm (in air) enters the water in a swimming pool. The speed of light in water is 0.750 times the speed in air. What is the wavelength of the light in water? ________ nm
Get college assignment help at uniessay writers Two objects attract each other gravitationally with a force of 2.9 10-10 N when they are 0.33 m apart. Their total mass is 4.0 kg. Find their individual masses.
An air puck of mass 0.27 kg is tied to a string and allowed to revolve in a circle of radius 1.0 m on a frictionless horizontal table. The other end of the string passes through a hole in the center of the table, and a mass of 1.4 kg is tied to it. The suspended mass remains in equilibrium while the puck on the tabletop revolves. (a) What is the tension in the string? 1 N (b) What is the force causing the centripetal acceleration on the puck? 2 N (c) What is the speed of the puck? 3 m/s
On the planet Newtonia, a simple pendulum having a bob with mass 1.00 and a length of 180.0 takes 1.32 , when released from rest, to swing through an angle of 12.5 , where it again has zero speed. The circumference of Newtonia is measured to be 51400 .
a 326-g object is attached to a spring
A woman on a 10-speed bicycle travels T 9 m/s relative to the ground as she passes a little boy on a tricycle going in the opposite direction. If the boy is traveling at 1 m/s relative to the ground, how fast does the boy appear to be moving relative to the woman?
A 0.450-kg ice puck,moving east with a speed of 300m/s, has a head-on collision with a 900-kg puck initially at rest.Assuming a perfectly elastic collision, what will be the speed and direction of each object after the collision?
The 2.0 kg, 40 cm diameter disk in the figure below is spinning at 280 rpm. How much friction force must the brake apply to the rim to bring the disk to a halt in 5.0 s
The puck in Figure P8.51 has a mass of 0.280 kg. Its original distance from the center of rotation is 40.0 cm, and the puck is moving with a speed of 60.0 cm/s. The string is pulled downward 15.0 cm through the hole in the frictionless table. Determine the work done on the puck.
what is the pressure on a table when a 15-N dictionary with a 0.05-m2 cover lies flat on it?
A 17 g rifle bullet traveling 240 m/s buries itself in a 3.4 kg pendulum hanging on a 2.9 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal components of the pendulum’s displacement
Four particles, one at each of the four corners of a square with 3.0-m-long edges, are connected by massless rods. The masses of the particles are m1 = m3 = 4.0 kg and m2 = m4 = 5.0 kg. Find the moment of inertia of the system about the z axis.
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