Makenna Booker 2022-07-18

### A car (mass mA) is driving at velocity V, when it smashed into an unmoving car (mass mB), looking bumpers. Both cars move together at the same velocity. The common velocity will be by A) mAV/mBB) mBV/mAC) mAV/(mA+mB)D) (mA+mB)V/mA

Lorelei Patterson 2022-07-17

### According to Guinness, the tallest man to have ever lived was Robert Pershing Wadlow of Alton, Illinois. He was last measured in 1940 to be 2.72 meters tall (8 feet, 11 inches). Determine the speed which a quarter would have reached before contact with the ground if dropped from rest from the top of his head.

Luke Taylor 2022-07-07

### Compute the work required to stretch a spring from equilibrium to 11 cm past equilibrium, assuming that the spring constant is k=190 kg/s2.

ROFHIWA NDOU 2022-07-03

### A projectile is fired with an initial speed of 36.6 m/s at an angle of 42.2 above the horizontal on a long flat firing range. Determine (a) the maximum height reached by the projectile, (b) the total time in the air, (c) the total horizontal distance covered (that is, the range), and (d) the speed of the projectile 1.50 s after firing

indileni2003 2022-06-22

### what will a spring scale read for the weight of a 55 kg woman in an elevator that moves upwards with constant speed of 6.0 m/s

Avrel fernandes 2022-06-21

### A nozzle with a radius of 0.250 cm is attached to a garden hose with a radius of 0.750 cm. The flow rate through hose and nozzle is 0.0009m^3/s. Calculate the speed of the water a) in the hose b) in the nozzle

Zamile Balite 2022-06-14

### Show that change in kinetic energy due to friction is given by ∆K = − f k d where k f is friction acting on an object and d is the length of the path followed by an object

Paul Kusi 2022-06-09

### -A noisy grinding machine in a factory produces a sound intensity of 1.00 * 10 ^ 5 * W / m2. Calculator (a) the decibel level of this machine, and (b) the new intensity level when a second, identical machine is added to the factory.

raleakak 2022-06-08

### A bowler throws a bowling ball of radius R = 11 cm along a lane. The ball (see the figure below) slides on the lane with initial speed vcom,0 = 6.3 m/s and initial angular speed ω0 = 0. The coefficient of kinetic friction between the ball and the lane is 0.32. The kinetic frictional force f→k${\stackrel{\to }{f}}_{k}$ acting on the ball causes a linear acceleration of the ball while producing a torque that causes an angular acceleration of the ball. When speed vcom has decreased enough and angular speed φ has increased enough, the ball stops sliding and then rolls smoothly. During the sliding, what are the ball's (a) linear acceleration and (b) angular acceleration? (c) How long does the ball slide? (d) How far does the ball slide? (e) What is the linear speed of the ball when smooth rolling begins? Note that the clockwise direction is taken as negative.

tinyikongobeni 2022-06-07

### A force of 250 N is applied to a hydraulic jack piston that is 0.01 m in diameter.  If the piston that supports the load has a diameter of 0.10 m, approximately how much mass can be lifted by the jack?  Ignore any difference in height between the pistons

Kyro casf 2022-06-01

### Charge Q is distributed uniformly throughout a spherical insulating shell. The net electrical flux in Nm2/C through the outer surface of the shell is:

Rashid Kaona 2022-05-23

### A 15 - k_{B} block is dragged over a rough, horizontal surface by a constant force of 70 N acting at an ungle of 20 above the horizontal. The block is displaced 5 m, and the coefficient of kinetic friction is 0.3. Find the work done by (a) the 70-N force, (b) the force of friction, (e) the normal force, and (d) the force of gravity. (e) What is the net work done on the block!

Alisa Durham 2022-05-20

### A light bulb is rated at 100W for a 220 V supply. Find the resistance of bulb.

Angelique Horne 2022-05-19

### The polariztion vector in a dielectric tube of inner radius r, and outer radius ${r}_{0}$ is $\stackrel{\to }{P}=\left({\stackrel{^}{a}}_{x}2x+{\stackrel{^}{a}}_{y}3y\right)$. The axis of the dielectric tube defined by ${z}_{0}>z>0$ coincides with the z-axis.a) Determine the equivalent polarization surface and volume charge densisites

ga2t1a2dan1oj 2022-05-15

### How many kilograms of waters are needed to obtain the 198.8 mol of deuterium, assuming that deiterium is 0.01500% of natural hydrogen?

cyrilchimfwembe 2022-04-19