Ineed1-66 questions
physical year exam
1. displacement vectors of 3m and 5m in the dis...
Ineed1-66 questions
physical year exam
1. displacement vectors of 3m and 5m in the distance combine to make a displacement vector that is
1. 2m.
2. 0m.
3. 8m.
4. 15m.
2. average speed is the total distance divided by the
1. average distance.
2. average acceleration.
3. total time.
4. slope.
3. the rate at which velocity is changing at a given instant is described by
1. instantaneous acceleration.
2. average speed.
3. constant speed.
4. vector addition
4. a train approaching a crossing change speed from 25 m/s to 10 m/s in 240 seconds. how can the train's acceleration be described ?
1. the train's acceleration is positive.
2. the train is not accelerating.
3. the train will come to rest in 6 minutes.
4. the train acceleration is negative.
5. when a pair of balanced forces acts on an object, the net force that results is
1. greater in size than both forces combined.
2. greater in size than one of the forces.
3. equal in size to one of the forces.
4. equal to zero.
6. a change in which of the following affects the weight of an object?
1. momentum
2. velocity
3. acceleration due to gravity
4. friction.
i need 1 - 42 mutiple choice answers
anyon
Answers: 3
Physics, 22.06.2019 02:50
Steam is generated in a boiler of a cogeneration plant at 10 mpa and 450°c at a steady rate of 5 kg/s. in normal operation, steam expands in a turbine to a pressure of 0.5 mpa and is then routed to the process heater, where it supplies the process heat. steam leaves the process heater as a saturated liquid and is pumped to the boiler pressure. in this mode, no steam passes through a condenser, which operates at 20 kpa. (a) determine the power produced in the turbine and the rate at which process heat is supplied in this mode. (b) determine the power produced in the turbine and the rate of process heat supplied if only 60 percent of the steam is routed to the process heater and the remainder is expanded to the condenser pressure. (3.32 mw; 9.69 mw; 4.25 mw; 5.82 mw)
Answers: 3
Physics, 22.06.2019 11:50
Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?
Answers: 2
Physics, 22.06.2019 17:30
Heterogeneous mixture with larger particles that never settle is
Answers: 2
Physics, 22.06.2019 18:30
Asmall 12.00g plastic ball is suspended by a string in a uniform, horizontal electric field with a magnitude of 10^3 n/c. if the ball is in equilibrium when the string makes a 30 ° angle with the vertical, what is the net charge on the ball?
Answers: 1
Mathematics, 22.04.2020 22:07
Mathematics, 22.04.2020 22:07
Mathematics, 22.04.2020 22:07
Biology, 22.04.2020 22:07
Mathematics, 22.04.2020 22:07
Mathematics, 22.04.2020 22:07
Physics, 22.04.2020 22:07
Mathematics, 22.04.2020 22:07
Mathematics, 22.04.2020 22:07