Two blocks are released from the top of a building. One falls straight down while the other slides down a smooth ramp. If all friction is ignored, which one is moving faster when it reaches the bottom
a worker pulls a 200 N packing crate at constant velocity across a rough floor by exerting a force F = 55 N at an angle of 35 degrees above the horizontal. What is the normal force of the floor on the
A 1889 kg car is pulling a(n) 483.584 kg trailer. Together the car and the trailer have an acceleration of 2.04 m/s^2 forward. The acceleration of gravity is 9.8 m/s^2 . Neglecting frictional forces a
Explain why this stops the dome charging up when the machine is switched on?-The point of the pin, with a tiny radius of curvature ( meaning, it is sharp ) produces an intense electric field. This fie
A large punch bowl holds 3.35 kg of lemonade (which is essentially water) at 20.0° C. A 0.28-kg ice cube at
−10.2°
C is placed in the lemonade. What is the final temperature of the system, and the amo
Im doing a piece of Physics work from which the experiment is (How the diameter of a cone affects the time it takes for it to reach the ground).
Theres marks for going above and beyond the curriculum
You know when you were little and you made those string telephones where you attach a cup on both ends of the string to talk into and to listen from?
How does that work scietifically?-Sound travels t
110 grams of boiling water are poured into an aluminum pan whose mass is 1000 grams. The initial temperature of the water is 100 C, with a heat capacity of 4.2 J/(gram · K). The aluminum pan has an in
A proton traveling at a speed of 5.38 *10^6m/s enter the gap between the plates of a 2.76 cm wide parallel plate capacitor. The surface charge densities on the plate are +/- 8.38 *10^-6 C/m2. How far
A low-pass RC filter with a crossover frequency of 1910 Hz uses a 152 Ω resistor. What is the value of the capacitor (in uF)?-C = 1 / (2pi*R*f) = 1 / (2pi*152*1910) F = 5.48*10^-7F = 0.548 uF
and what is the a device that slows down the movement of charges?-A good ammeter, sometimes called picoammeter.
You can change the movement of charges various ways, by the size of the wire, or its ma
Travelling at 18ms^-1 brakes are applied & car skids in a straight line to stop. Coefficient of friction is 0.4. How far does car travel before stopping?
OK, so,
F = μ Nbut N = mg
so F = μmg
& F = ma
What can you do to a design of a rocket to make it go higher? (soda bottle rocket)-You want to do two things - stabilise its flight, and reduce drag, to make it go higher. To that effect, its good to
A passenger with a mass of 120 kg rides an elevator that accelerates upward with an acceleration of 2 m/2^2. How heavy does the passenger feel?
A lady with a mass of 75 kg rides an elevator that is
