Physics question and answers for September 19, 2023
- Q What are some examples of physical science concepts that are usedto solve problems? And discuss the application of theconcept.
- Q You are a junior space cadet on an interstellar space station.Your job is to launch a long distance spacecraft. The mass of thespacecraft without any fuel is 1217 kg. This...
- Q A 60 kg soccer player jumps vertically upwards and heads the0.45 kg ball as it is descending vertically with a speed of 27 m/s.If the player was moving upward with...
- Q A 6.10 m length of 2.4 mm -diameter wire carries a 770 mAcurrent when 22.0 mV is applied to its ends. The drift velocity is2.0×10−5 m/s .A. Determine the resistance...
- Q A particle with a charge of −2.80×10−8 C is moving with aninstantaneous velocity of magnitude 42.5 km/s in the xy -plane atan angle of 52.0 o counterclockwise from the +x...
- Q Write a creative story to tell about the journey of a joggerfrom one location in a park to another location. Make up someevents and experiences that the jogger goes through...
- Q Divers get “the bends†when bubbles of N2 gas form in theirbloodstream if they rise too rapidly from a deep dive. Calculatethe solubility (mol L−1) of N2 in water (this...
- Q Point B is at < 8.9, 4.0, 14.4 > ft. A force vector of< 15, 37, 21 > pounds is applied at point B.A) Determine the x-component of the torque...
- Q A person is pulling a 40 kg block of ice across an icy surfaceat a 25 degree angle. If the person is pulling with a force of 42N, what is...
- Q A 1.85 kg block slides with a speed of 0.955 m/s on africtionless horizontal surface until it encounters a spring with aforce constant of 980 N/m . The block comes...
- Q A merry-go-round with a moment of inertia of 750 kgm^2 and aradius of 2.55 m is rotating with an angular velocity of 9.42 rad/sclockwise (as viewed from above.) A child,...
- Q Explain, in thermodynamic terms what happens and how it isachieved to ensure that an engine can operate at high altitude forcommercial aircraft since the highier they go the less air...
- Q A woman of mass m = 53.4 kg sits on the left end of aseesaw—a plank of length L = 4.25 m—pivoted in the middleas shown in the figure.(a) First...
- Q On average, both arms and hands together account for 13% of aperson's mass, while the head is 7.0% and the trunk and legsaccount for 80%. We can model a spinning...
- Q A solid, homogeneous sphere with a mass of m0, aradius of r0 and a density of Ï0 is placed ina container of water. Initially the sphere floats and the waterlevel...
- Q An air bubble at the bottom of a lake 32.0m deep has a volume of1.00 cm3.If the temperature at the bottom is 2.2 ?C and at the top 20.2?C, what...
- Q The lab experiment is repeated with the sametwo glass plates but with a different human hair. The sodium vaporlamp is replaced by a monochromatic light source that produceslight of wavelength?air...
- Q (A.) A \"healthy\" systolic (during heartcontraction, the high number in 120/80) blood pressure is typically120 mmHg. What is this in Pascals? (Take the density of mercury tobe 14 g/ml and...
- Q . Block A and Block B start from rest on a horizontal track. Anideal string pulls cart A with a constant force of 25 N, causingboth of the carts to...
- Q 1.) Give the three mathematical definitions of conservativeforces?2.) Explain what the expression \"Inertial force\" means? and whyare inertial forces not really forces?3.) For pulley-type simple machines specifically, the idealmechanical advantage...
- Q The great pyramid of Giza consits of approximately 2 millionstones, each weighing 1.5 tons ( 3000 lbs). The pyramid is 450 fthigh and has a square base measuring 750 ft....
- Q Thermal Storage Solar heating of a house is much more efficientif there is a way to store the thermal energy collected during theday to warm the house at night. Suppose...
- Q A uniform steel rod has mass 0.300 kg and length 40.0 cmand ishorizontal. A uniform sphere with radius 8.00 cm and mass 0.700 kgis welded to one end of the...
- Q A uniform spherical shell of mass M = 2.0 kg and radiusR = 13.0 cm rotates about a vertical axis on frictionlessbearings (see the figure). A massless cord passes around...
- Q A uniform stationary ladder of length L = 4.2 m and mass M = 19kg leans against a smooth vertical wall, while its bottom legs reston a rough horizontal floor....
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